CT Technologist References
CT Technologist References
See the complete reference spreadsheet with formatting here (requires the ability to access Google Sheets):
https://docs.google.com/spreadsheets/d/1hyWDS2V5PJ9tSN5fJ6Oth8Wsc2eakJQNGlh8f1jAHfI/
CT Head, without contrast | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - memory loss, shunt check, TIA, trauma, AMS, CVA, MVA, HA, dementia, hemorrage, alzheimers, dizziness, ataxia | |||||
| Preparation: | - none | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - base of skull to top of head | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | 120 | 320 | 32 x1.2 | axial scan | bottom to top | |
| Siemens 16 | 120 | 350 | 12 x1.5 | axial scan | bottom to top | |
| GE 64 | 120 | auto MA | 5.0 mm/20 interval | axial scan | bottom to top | |
| GE 16 | 120 | auto MA | 5.0 mm/10 interval | axial scan | bottom to top | |
| Comments: | - scan in standard algorithm; WW 90 WL 35 ASIR 30% (GE 64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 5.0/20 | bone plus | 2000/200 | |
| GE 16 | entire volume | AX | 5.0/10 | bone plus | 2000/200 | |
| Siemens 128 | entire volume | AX | 5.0/32x1.2 | bone | 2500/450 | |
| Siemens 16 | entire volume | AX | 4.5 | bone | ||
| Comments: | Siemens 16 | |||||
| Add sagittal and coronal reformations to all in standard algorithm, WW 90 WL 35 | ||||||
| CT Head, with contrast | ||||||
| Indications and preparation | ||||||
| Indications: | - mets, hx of cancer, AIDS, abscess, meningitis, tumor | |||||
| Preparation: | - NPO 2 hours prior to scan | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | nonionic | 2.5cc/sec | 80cc | 0 | ||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | 2-3minutes | n/a | - base of skull to top of head | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | 120 | 320 | 5.0/32x1.2 | axial | bottom to top | |
| Siemens 16 | 120 | 350 | 12/1.5 | bottom to top | ||
| GE 64 | 120 | auto MA | 5.0mm/ 20 interval | axial scan | bottom to top | |
| GE 16 | 120 | auto MA | 5.0mm/ 10 interval | axial scan | bottom to top | |
| Comments: | - scan in standard algorithm; WW 90 WL 35 ASIR 30% (GE 64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 5.0/20 | bone plus | 2000/200 | |
| GE 16 | entire volume | AX | 5.0/10 | bone plus | 2000/200 | |
| Siemens 16 | entire volume | AX | 4.5 | bone | ||
| Siemens 128 | entire volume | AX | 5.0/32x1.2 | bone | 2500/450 | |
| Siemens 4 | entire volume | AX | 5/2.5 | bone | Kernel-H60s sharp | |
| Comments: | Siemens 16 | |||||
| CTA and CTV Head | ||||||
| Indications and preparation | ||||||
| Indications: | - CVA, aneurysm, stroke | |||||
| Preparation: | - NPO | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 5cc/sec | 20cc test injection; 80cc for scan | 50cc after test; 50cc for scan | ||
| Comments: | - bolus track on SIEMENS with 100 cc and 50cc IV flush | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| test injection | O | n/a | - C-2 | |||
| post-contrast | depends on test inject'n | n/a | - C-2 to top of head | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 3.0x/ 123x0.6 | 0.45 | bottom to top | |
| Siemens 16 | 120 | 200 | 16x.75 | 0.65 | arch to top | |
| GE 64 | 120 | auto MA | 1.25 x 1.25 | 0.516:1 | bottom to top | |
| GE 16 | 120 | auto MA | 1.25 x 1.25 | 0.562:1 | bottom to top | |
| Comments: | - CTV coverage from skull base to vertex with delay based on venous tracking parameters (typically 30-45 seconds should be adequate if bolus track not used). Sagittal and coronal reformats with MIP reconstructions. | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64, GE 16 | entire volume | AX | 0.625/0.625 | standard | 600/250 | |
| GE 64, GE 16 | entire volume | SAG/COR MIP | 5.0/1.0 | standard | 600/250 | |
| Comments: | - thin reformats sent out for 3D reconstructions on CTA | |||||
| CTA Head and Neck | ||||||
| Indications and preparation | ||||||
| Indications: | - CVA, aneurysm, stroke, stenosis | |||||
| Preparation: | - NPO | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 5cc/sec | 80cc | 50cc | ||
| Comments: | - bolus track on SIEMENS with 100 cc and 50cc IV flush | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | smart prep arch | n/a | - below arch to top of head | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 3.0/123x0.6 | 0.55 | bottom to top | |
| Siemens 16 | 120 | 200 | 16x.75 | 0.65 | bottom to top | |
| GE 64 | 120 | Auto MA | 2.5 x 2.5 | 0.984:1 | bottom to top | |
| GE 16 | 120 | Auto MA | 2.5 x 2.5 | 0.938:1 | bottom to top | |
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| Siemens 128 | entire volume | Axial | 0.625mmx0.625mm | standard | 700/80 | |
| GE 64, GE 16 | entire volume | Axial | 0.625/0.625 | standard | 600/250 | |
| GE 64, GE 16 | entire volume | COR/bilat SAG oblique | 1.0/1.0 | standard | 600/250 | |
| GE 64, GE 16 | head only | AX/COR/SAG MIP | 5.0/1.0 | standard | 600/250 | |
| Siemens 16 | Head MIP | 3 plane | 5.0/1.0 | |||
| Siemens 16 | neck | COR/SAG Oblique | 1.0/1.0 | |||
| Siemens 128 | neck | COR | 5.0/1.0 | standard | 700/80 | |
| Siemens 128 | Rt&Lt obliques | SAG | 5.0/1.0 | standard | 950/250 | |
| Siemens 128 | head only | AX/COR/SAG MIP | 5.0/1.0 | standard | 700/80 | |
| Comments: | - thin reformats sent out for 3D reconstructions | |||||
| Stealth Brain/Deep Brain Stimulator | ||||||
| Indications and preparation | ||||||
| Indications: | - pre-op | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| - none | ||||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - top of head through maxillary sinuses | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | 120 | CareDose 4D | 0.6mm/128x0.6 | 0.55 | Bottom to top | |
| GE 64 | 120 | Auto MA | 1.25 x 1.25 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto MA | 1.25 x 1.25 | 0.562:1 | top to bottom | |
| Comments: | - include all soft tissue including top of head WW 90 WL 35 | |||||
| - give patient a CD if scanned days prior to surgery. Send scan to DPSTEALTH if done day of surgery | ||||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| Siemens 128 | entire volume | AX | 0.6mmx0.6mm | H70h very sharp | stealth bone | |
| Siemens 128 | entire volume | AX | 2.0mmx2.0mm | H31s | sinus stnd | |
| Siemens 128 | entire volume | AX | 2.0mmx2.0mm | H70h very sharp | bone | |
| Siemens 128 | entire volume | SAG / COR | 0.6mmx0.6mm | H70h very sharp | stealth bone |
CT Orbits, without contrast | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - trauma, fracture | |||||
| Preparation: | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - above orbits to roof of mouth | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care KV | Care Dose4D | 2.0mm/128x0.6 | 0.8 | bottom to top | |
| Siemens 16 | ||||||
| Siemens 4 | 120 | 100 | 1 | slice3/inc3 | ||
| GE 64 | 120 | Auto MA | 0.625/0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto MA | 2.5x2.5 | 1.375:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2500 WL1000 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | bone | 2500/1000 | |
| GE 64, GE 16 | entire volume | AX | 2.5/2.5 | standard | 350/40 | |
| GE 64, GE 16 | entire volume | COR/SAG | 2.0/2.0 | bone | 2500/1000 | |
| Siemens 4 | kernel H60s-recon 2 | AX | 1.25/.6 | bone | ||
| Siemens 4 | kernel H20s | AX | 3.0/3.0 | Abdomen/Soft | ||
| Siemens 4 | COR/SAG | recon 2 above | bone | |||
| Siemens 128 | entire volume | COR/SAG | 2.0/2.0 | |||
| Siemens 128 | entire volume | AX | 2.0/2.0 | H30s | 400/40 | |
| Siemens 128 | entire volume | COR/SAG | 2.0/2.0 | H60s sharp | 2500/450 | |
| Comments: | ||||||
| CT Orbits, with contrast | ||||||
| Indications and preparation | ||||||
| Indications: | - abscess, swelling and redness | |||||
| Preparation: | - NPO 2 hours prior to scan | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | nonionic | 2.5cc/sec | 80cc | 0 | ||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | 90 sec | N/A | - above orbits to roof of mouth | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 20.mm/128x0.6mm | 0.8 | bottom to top | |
| Siemens 16 | ||||||
| Siemens 4 | 120 | 100 | 1 | slice 3.0/inc 3.0 | ||
| GE 64 | 120 | Auto MA | 0.625/0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto MA | 2.5x2.5 | 1.375:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2500 WL1000 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | bone | 2500/1000 | |
| GE 64, GE 16 | entire volume | AX | 2.5/2.5 | standard | 350/40 | |
| GE 64, GE 16 | entire volume | COR/SAG | 2.0/2.0 | bone | 2500/1000 | |
| Siemens 4 | kernel H20s-recon 2 | AX | 1.25/.6 | Abdomen/Soft | ||
| kernel H60s | AX | 3.0/3.0 | bone | |||
| COR/SAG | recon 2 above | bone | ||||
| Siemens 128 | entire volume | AX | 2.0/2.0 | H30s | 400/40 | |
| Siemens 128 | entire volume | COR/SAG | 2.0/2.0 | H30s | 400/40 | |
| Comments: |
Temporal bone CT | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - tinnitus, cholesteatoma, otitis media, mastoiditis, trauma, etc. | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - none | |||||
| oral | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - most inferior mastoid through top of mastoid air cells | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | 120 | 150 | 2/.06 | 0.8 | ||
| Siemens 4 | 120 | 170 | 0.5 | 1.0/1.0 | rot. time .75 | |
| GE 64 | 120 | 320 | 0.531:1 | |||
| GE 16 | 120 | 320 | 0.562:1 | |||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| Siemens 4 | Rt and Lt separate | COR/AX | 1.25/0.6 | bone | ||
| Siemens 16 | Rt and Lt separate | COR/AX | .6/.6 | bone | ||
| GE 64 | Rt and Lt separate | COR/AX | 0.625/0.625 | bone plus | ||
| GE16 | Rt and Lt separate | COR/AX | 1.25/1.25 (.625 if doable) | bone plus | ||
| Comments: | Scan FOV 25 for GE with Recon FOV of 10. Note for GE 16: if scanning at .625, recon at .625 too |
CT Face, without contrast | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - trauma, MVA, abnormal X-Ray, pain, fracture | |||||
| Preparation: | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - above frontal sinuses though soft tissue of mandible | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 2.0mm/128x0.6mm | 0.8 | bottom to top | |
| Siemens 16 | ||||||
| Siemens 4 | 120 | 100 | 1 | slice 3/3 | ||
| GE 64 | 120 | Auto MA | 0.625x0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto MA | 2.5/2.5 | 0.938:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2500 WL 1000 with 30% ASIR (GE64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | bone plus | 2500/1000 | |
| GE 64, GE16 | entire volume | AX | 2.5/2.5 | standard | 400/40 | |
| GE 64, GE16 | entire volume | COR/SAG | 2.0/2.0 | bone | 2500/1000 | |
| Siemens 4 | kernel H60s-recon 2 | AX | 1.25/.6 | bone | ||
| kernel H20s | AX | 3.0/3.0 | abdomen/soft | |||
| COR/SAG | recon 2 above | bone | ||||
| Siemens 128 | entire volume | AX | 2.0/2.0 | H30s | 400/40 | |
| Siemens 128 | entire volume | COR/SAG | 2.0/2.0 | H60s Sharp | 2500/450 | |
| Siemens 128 | entire volume | COR/SAG | 2.0/2.0 | H30s | 400/40 | |
| Comments: | ||||||
| CT Face, with contrast | ||||||
| Indications and preparation | ||||||
| Indications: | - abscess, mass, facial swelling and/or redness without trauma | |||||
| Preparation: | - NPO 2 hours prior to scan | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 2.5cc/sec | 80cc | 0 | ||
| oral | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | 90 sec | N/A | - above frontal sinuses through soft tissue of mandible | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care 4D | Care Dose 4D | 2.0mm/128x0.6mm | 0.8 | bottom to top | |
| Siemens 16 | ||||||
| Siemens 4 | ||||||
| GE 64 | 120 | Auto MA | 0.625x0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto MA | 2.5/2.5 | 0.938:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2500 WL 1000 with 30% ASIR (GE64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | bone plus | 2500/1000 | |
| GE 64, GE16 | entire volume | AX | 2.5/2.5 | standard | 400/40 | |
| GE 64, GE16 | entire volume | COR/SAG | 2.0/2.0 | bone | 2500/1000 | |
| Siemens 4 | kernel H20s-recon 2 | AX | 1.25/.6 | abdomen/soft | ||
| kernel H60s | AX | 3.0/3.0 | bone | |||
| COR/SAG | recon 2 above | bone | ||||
| Siemens 128 | entire volume | AX | 2.0/2.0 | H30s | 400/40 | |
| Siemens 128 | entire volume | COR/SAG | 2.0/2.0 | H30s | 400/40 | |
| Comments: |
CT Sinuses, without contrast | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - sinusitis, headache, congestion, pressure | |||||
| Preparation: | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - top of frontal sinuses through maxillary sinuses | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 2.0mm/128x0.6mm | 0.8 | bottom to top | |
| Siemens 16 | 120 | 120 | 16/0.75 | 3.0/3.0 | rot time=1.0 | |
| Siemens 4 | 120 | 100 | 1 | slice 3.0/3.0 | rot time=.75 | |
| GE 64 | 120 | Auto MA | 0.625 x 0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto MA | 2.5 x 2.5 | 1.375:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2500 WL 250 with 40% ASIR (GE64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| reconstructions for PACS | ||||||
| GE 64 | entire volume | AX | 2.5/2.5 | bone | 2500/250 | |
| GE16, GE 64 | entire volume | COR/SAG | 2.0/2.0 | bone | 2500/250 | |
| thins for reconstruction | ||||||
| Siemens 4 | H60s | COR | 1.25/.6 | |||
| Siemens 16 | H60s | COR | .75/.5 | |||
| Siemens 128 | entire scan | AX | 2.0/2.0 | H30s | 400/40 | |
| Siemens 128 | entire scan | COR/SAG | 2.0/2.0 | H60s sharp | 2500/450 | |
| Comments: | ||||||
| CT Sinuses, with contrast | ||||||
| Indications and preparation | ||||||
| Indications: | - abscess | |||||
| Preparation: | - NPO 2 hours prior to scan | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 2.5cc/sec | 80cc | 0 | ||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | 90sec | n/a | - top of frontal sinuses through maxillary sinuses | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 2.0mm/128x0.6 | 0.8 | bottom to top | |
| Siemens 16 | ||||||
| GE 64 | 120 | Auto MA | 0.625 x 0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto MA | 2.5 x 2.5 | 1.375:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2500 WL 250 with 40% ASIR (GE64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | bone | 2500/250 | |
| GE16, GE 64 | entire volume | COR/SAG | 2.0/2.0 | bone | 2500/250 | |
| GE 16, GE 64 | entire volume | COR/SAG | 2.0/2.0 | standard | 400/50 | |
| Siemens 128 | entire volume | AX | 2.0mmx2.0mm | H30s | 400/40 | |
| Siemens 128 | entire volume | COR/SAG | 2.0mmx2.0mm | H60s sharp | 2500/450 | |
| Comments: | ||||||
| CT Sinuses, STEALTH protocol | ||||||
| Indications and preparation | ||||||
| Indications: | - preoperative assessment | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - top of frontal sinuses through maxillary sinuses | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | 120 | 120 | 16x.75 | 0.8 | ||
| GE 64 | ||||||
| GE 16 | ||||||
| Comments: | ||||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | ||||||
| GE16, GE 64 | ||||||
| Siemens 16 | H60s | COR | 1.0/.5 |
CT Neck, without contrast | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - contraindication to IV contrast, mass, metastases, cancer, swelling, dysphagia | |||||
| Preparation: | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - nasion/supraorbital ridge to lung apex | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | CareDose 4D | 3.0mm/128x0.6mm | 0.8 | top to bottom | |
| Siemens 16 | 120 | 220 | 1.5 | 0.7 | Recon 1-B20f smooth | |
| Siemens 4 | ||||||
| GE 64 | 120 | Auto MA | 0.625x0.625 | 0.984:1 | top to bottom | |
| GE 16 | 120 | Auto MA | 2.5 x 2.5 | 0.938:1 | Top to bottom | |
| Comments: | - scan in standard algorithm WW 400 WL 50 with 40% ASIR (GE 64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | standard | 350/50 | |
| Ge 16 GE 64 | entire volume | AX | 2.5/2.5 | bone | 2000/250 | |
| Ge 16 GE 64 | entire volume | COR/SAG | 3.0/3.0 | standard | 350/50 | |
| Siemens 16 | Recon 2 | kernel-B60s | 2.0/0.8 | abdomen | ||
| Recon 3 | kernel-B60f | 3.0/3.0 | lung | |||
| Siemens 128 | entire volume | AX | 3.0mmx3.0mm | B60s sharp | 2890/595 | |
| Siemens 128 | entire volume | COR/SAG | ||||
| Comments: | - Siemens - Coronal (angled parallel to trachea) and Sagittal 3/3 of Recon2. | |||||
| CT Neck, with contrast | ||||||
| Indications and preparation | ||||||
| Indications: | - mass, mets, cancer, swelling, dysphagia | |||||
| Preparation: | - NPO 2 hours proir to scan; advise patient to NOT swallow during scan | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 2.5cc/sec | 80cc | 0 | ||
| oral | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | 120-180 seconds | n/a | - nasion/supraorbital ridge to lung apex | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 3.0mm/128x0.6mm | 0.8 | top to bottom | |
| Siemens 16 | 120 | 220 | 1.5 | 0.7 | Recon 1-B20f smooth | |
| GE 64 | 120 | Auto MA | 0.625x0.625 | 0.984:1 | top to bottom | |
| GE 16 | 120 | Auto MA | 2.5 x 2.5 | 0.938:1 | Top to bottom | |
| Comments: | - scan in standard algorithm WW 400 WL 50 with 40% ASIR (GE 64) | |||||
| *Add angled slices oriented parallel to maxillary and mandibular ridges when and where possible to reduce limitations of dental artifacts | ||||||
| *Add axial thin section recons (1 mm or less) parallel to vocal cords with sagittal and coronal reformats of cords for ALL laryngeal CA cases (including history of hoarseness, stridor, etc.) | ||||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | standard | 350/50 | |
| Ge 16 GE 64 | entire volume | AX | 2.5/2.5 | bone | 2000/250 | |
| GE 16, GE 64 | entire volume | COR/SAG | 3.0/3.0 | standard | 350/50 | |
| Siemens 16 | Recon 2 | kernel-B60s | 2.0/0.8 | abdomen | ||
| Recon 3 | kernel-B60f | 3.0/3.0 | lung | |||
| Siemens 128 | entire volume | AX | 3.0mmx3.0mm | B60s sharp | 2890/595 | |
| Siemens 128 | entire volume | COR/SAG | 3.0mmx3.0mm | B30s | 435/55 | |
| Comments: | * History of larynx CA, vocal cord paralysis or larynx trauma must also perform thin section AX reformats from hyoid to cricoid (parallel to vocal cords/C5-6) with thin section direct coronal through larynx/trachea | |||||
| - Siemens - Coronal (angled parallel to trachea) and Sagittal 3/3 of Recon2. | ||||||
| CTA Neck / Carotid arteries | ||||||
| Indications and preparation | ||||||
| Indications: | - CVA, aneurysm, stroke, stenosis | |||||
| Preparation: | - NPO | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 5cc/sec | 80cc | 50cc | ||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | Smart Prep Arch | n/a | - below arch to lateral horns | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 3.0mmx/128x0.6 | 0.75 | Bottom to top | |
| Siemens 16 | ||||||
| Siemens 4 | ||||||
| GE 64 | 120 | Auto MA | 2.5 x 2.5 | 0.969:1 | bottom to top | |
| GE 16 | 120 | Auto MA | 2.5 x 2.5 | 1.375:1 | bottom to top | |
| Comments: | ||||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64, GE 16 | entire volume | Axial | 0.625/0.625 | standard | 600/250 | |
| GE 64, GE 16 | entire volume | Cor/ Rt< sagittal oblique of each carotid | 1.0/1.0 | standard | 600/250 | |
| Siemens 128 | entire volume | AX | 0.625x0.625 | B26f | 700/80 | |
| Siemens 128 | neck | COR | 5.0/1.0 | B31f | 700/80 | |
| Siemens 128 | Rt & Lt Oblique | SAG | 1.0/1.0 | B31f | 950/250 | |
| Comments: | - thin reformats sent out for 3D reconstructions |
Abdomen / Pelvis with contrast (4/28/21) | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - pain, cancer, diverticulitis, lymphoma | |||||
| Preparation: | - NPO 2 hours prior, pick up oral contrast | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 2.5cc/sec | 100cc | 0 | ||
| oral | -Per protocol | |||||
| Comments: | - oral contrast is picked up by outpatients the night before with instructions | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| post-contrast | Smart prep ROI Liver or 70 sec delay | inspiration | Dome of diaphragm to symphysis pubis bone | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV or 120 | Care Dose 4D | 128 x 0.6 | 0.6 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 40% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| entire volume | AX | 2.5-3.0/2.5-3.0 | standard | AX standard | ||
| lungs only | AX | 2.5-3.0/2.5-3.0 | lung | AX lung | ||
| entire volume | SAG/COR | 3.0/3.0 | standard | SAG/COR | ||
| Comments: | ||||||
| Abdomen / Pelvis without contrast (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | - stones, pain, cancer, diverticulitis, lymphoma, contraindication to IV contrast | |||||
| Preparation: | - NPO 2 hours prior, pick up oral contrast | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - none | |||||
| oral | Per protocol | |||||
| Comments: | - oral contrast is picked up by outpatients the night before with instructions | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | inspiration | - top of diaphragm through symphysis pubis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 40% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| entire volume | AX | 2.5-3.0/2.5-3.0 | standard | AX standard | ||
| lungs only | AX | 2.5-3.0/2.5-3.0 | lung | AX lung | ||
| entire volume | SAG/COR | 3.0/3.0 | standard | SAG/COR | ||
| Comments: | ||||||
| Enterography (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | - gi bleed, crohn disease, ulcerative colitis, small bowel tumor, celiac disease | |||||
| Preparation: | - NPO Pt comes in 1 hour prior to appoinment to drink contrast | |||||
| Contrast | type | rate | volume | saline flush | ||
| oral | Volumen BA or equivalent negative oral contrast agent (3 bottles total) | 60min prior (450ml), 40 min prior (450), 20 min prior (225ml), 10 min prior (225ml) - or equivalent volumes if using different negative contrast agent | 1350 ml total - or equivalent volume if using different negative contrast agent | 0 | ||
| intravenous | nonionic | 4-5 cc/sec | 125cc | 0 | ||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| post-contrast | Smart prep ROI in aorta for arterial phase then 65 sec delay | inspiration | - top of diaphragm through symphysis pubis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | Top to bottom | |
| GE 64 | 140 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 140 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 40% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| entire volume | AX | 2.5/2.5 | standard | AX standard | ||
| lungs only | AX | 3.75/3.75 | lung | AX lung | ||
| entire volume | SAG/COR | 3.0/3.0 | standard | SAG/COR | ||
| Comments: | Arterial and enteric phase should be performed for cases of GI bleed and small bowel tumors. Single enteric phase at 65-70 sec after injection can be performed for inflammatory bowel disease, Chron's, ulcerative colitis, etc. | If performed, AX arterial and AX venous | ||||
| CT Colonography (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | incomplete colonscopy, colon cancer screening | |||||
| Preparation: | standard colonography prep | |||||
| Contrast | type | rate | volume | saline flush | ||
| oral | rectal insufflation | protocol | protocol | n/a | ||
| intravenous | nonionic (if needed) | 2-3 cc/sec | 125cc | 0 | ||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| supine | 60 sec delay when needed | expiration | Top of diaphragm to symphysis pubis bone | |||
| prone | 60 sec delay when needed | expiration | same as above | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | Top to bottom | |
| GE 64 | 140 | Auto MA, Smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 140 | Auto MA, Smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 40% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| entire volume | AX | 2.5/2.5 | standard | |||
| entire volume | SAG/COR | 3/3/2015 | standard | |||
| Comments: | Same as above | |||||
| Chest, abdomen, pelvis CT (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | Oncology follow up, | |||||
| Preparation: | - NPO 2 hours prior, pick up oral contrast | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 2.5cc/sec | 100cc | 0 | ||
| oral | Per protocol | |||||
| Comments: | - oral contrast is picked up by outpatients the night before with instructions | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| post-contrast | 70 sec delay | inspiration | Supraclavicular to symphysis pubis bone | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV or 120 | Care Dose 4D | 128 x 0.6 | 0.6 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 40% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| entire volume | AX | 2.5-3.0/2.5-3.0 | standard | AX standard | ||
| lungs only | AX | 2.5-3.0/2.5-3.0 | lung | AX lung | ||
| thins | AX | 1.0/1.0 | standard | AX lung thin | ||
| MIP | AX | 8/3 | standard | AX lung MIP | ||
| entire volume | SAG/COR | 3.0/3.0 | standard | SAG/COR | ||
| Comments: | ||||||
| CTA chest, abdomen, pelvis (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | Chest pain, aortic dissection | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | none | inspiration | Chest only if chest pain or r/o dissection. | |||
| post-contrast | Smart prep aortic arch | inspiration | lung apices through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| noncon | AX | 2.5-3 | standard | |||
| post con | AX | 2 -2.5 | standard | |||
| lungs | AX | 2.5 - 3 | lung | |||
| post con | Sag, Cor, Candy cane MPR | 2 -2.5 | standard | |||
| post con | Candy Cane MIP, coronal to aorta | 5 x 2.5 | ||||
| Comments: | Send thins to 3D lab if preoperative patient. | |||||
| CTA chest, abdomen, pelvis (stent) (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | stent follow up | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | none | inspiration | through stent only | |||
| arterial post-contrast | Smart prep aortic arch | inspiration | lung apices through pubic symphysis | |||
| venous post contrast | 80 sec delay | inspiration | through stent only | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| noncon | AX | 5 | standard | |||
| arterial and venous post con | AX | 2 | standard | |||
| lungs | AX | 2.5 | lung | |||
| non con | Sag, cor MPR | 3 x 3 | standard | |||
| arterial post con | Sag, cor MPR | 2 x 1 | standard | |||
| arterial post con | Candy cane and candy Cor to aorta MIP | 5 x 2.5 | ||||
| venous post con | Sag, cor MPR | 3 x 3 | standard | |||
| Comments: | Send thins to 3D lab | |||||
| CTA chest, abdomen, pelvis (no stent) (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | aneurysm, preop | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | none | inspiration | chest, abdomen, pelvis | |||
| arterial post-contrast | Smart prep aortic arch | inspiration | lung apices through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| noncon | AX | 5 | standard | |||
| arterial and venous post con | AX | 2 | standard | |||
| lungs | AX | 2 | lung | |||
| non con | Sag, cor MPR | 3 x 3 | standard | |||
| arterial post con chest only | Sag, cor, candy cane MPR | 2 x 1 | standard | |||
| arterial post con abdomen/pelvis only | Sag, cor, candy cane MPR | 2 x 1 | standard | |||
| arterial post con c/a/p | Cor, sag, candy cane MIPs | 5 x 2.5 | ||||
| Comments: | Send thins to 3D lab | |||||
| CTA Aortic dissection (abdomen only) (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | Chest pain, aortic dissection | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | none | inspiration | abdomen/pelvis | |||
| post-contrast | Smart prep descending aorta | inspiration | diaphragm through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| noncon | AX | 2.5 | standard | |||
| post con | AX | 2 | standard | |||
| lungs | AX | 2.5 | lung | |||
| post con | Sag, Cor MPR | 1 x 1 | standard | |||
| post con | Sag/Cor MIP | 5 x 2.5 | only if not sent to 3D | |||
| Comments: | Typically do not need to send to 3D if out of the ER, otherwise send to 3D | |||||
| CTA abdomen, pelvis (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | occlusive disease, decreased pulses | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| post-contrast | Smart prep aorta at celiac artery | inspiration | diaphragm through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| post con | AX | 2-2.5 | standard | |||
| lungs | AX | 2.5-3 | lung | |||
| post con | Sag, Cor MPR | 2 x 1 | standard | |||
| post con | Sag/Cor MIP | 10 x 2.5 | only if not sent to 3D | |||
| Comments: | Send thins to 3D lab. | |||||
| CTA AP - Acute GI bleed (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | Acute GI bleed workup, evaluate for source of bleeding | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | none | inspiration | abdomen/pelvis | |||
| post-contrast arterial | Smart prep aorta at celiac artery | inspiration | diaphragm through pubic symphysis | |||
| post-contrast delay | 70 seconds | inspiration | diaphragm through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| All 3 phases | AX | 2-2.5 | standard | |||
| lungs | AX | 2.5-3 | lung | |||
| Arterial and delay | Sag, Cor MPR | 2 x 1 | standard | |||
| Arterial | Sag/Cor MIP | 10 x 2.5 | standard | |||
| Comments: | DO NOT send to 3D lab | |||||
| CTA AAA (no stent) (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | AAA | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| unenhanced | none | inspiration | above diaphragm through pubic symphysis | |||
| post-contrast | Smart prep descending aorta | inspiration | diaphragm through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| unenhanced | Ax | 5 | standard | |||
| post con | AX | 2-2.5 | standard | |||
| lungs | AX | 2.5-3 | lung | |||
| post con | Sag, Cor MPR | 1.5 x 1.5 | standard | |||
| post con | Sag/Cor MIP | 12 x 3 | only if not sent to 3D | |||
| Comments: | Send thins to 3D lab. | |||||
| CTA Mancoll Flap (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | Breast reconstruction | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| post-contrast | Smart prep aorta at celiac artery | inspiration | diaphragm through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| post con | AX | 1-1.25 | standard | |||
| lungs | AX | 2.5-3 | lung | |||
| post con | Sag/Cor/Ax MIP | 10 x 3 | ||||
| Comments: | Do not send to 3D | |||||
| CTA Mesenteric Ischemia (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | mesenteric ischemia | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| arterial post-contrast | Smart prep descending aorta | inspiration | diaphragm through pubic symphysis | |||
| venous post contrast | 60 sec delay from injection | inspiration | diaphragm through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| arterial and venous post con | AX | 2-2.5 | standard | |||
| lungs | AX | 2.5-3 | lung | |||
| arterial and venous post con | Sag, Cor MPR | 3 x 3 | standard | |||
| Comments: | Send thins to 3D lab. | |||||
| CTA abdomen pelvis AAA (stent) (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | stent follow up | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | none | inspiration | through stent only (only needed on first follow up scan) | |||
| arterial post-contrast | Smart prep aortic arch | inspiration | diaphragm through pubic symphysis | |||
| venous post contrast | 90 sec delay | inspiration | through stent only | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| noncon | AX | 5 | standard | |||
| arterial post con | AX | 1-1.25 | standard | |||
| venous post con | AX | 5 | standard | |||
| lungs | AX | 2.5 | lung | |||
| non con | Sag, cor MPR | 3 x 3 | standard | |||
| arterial post con | Sag, cor MPR | 1.5 x 1.5 | standard | |||
| arterial post con | Cor/Sag MIP | 12 x 3 | only if not sent to 3D | |||
| Comments: | Send thins to 3D lab | |||||
| CTA Renal Artery Stenosis (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | Renal artery hypertension workup | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| arterial post-contrast | Smart prep aorta at celiac artery | inspiration | diaphragm through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| arterial and venous post con | AX | 2-2.5 | standard | |||
| lungs | AX | 2.5-3 | lung | |||
| post con | Sag, Cor MPR | 1 x 1 | standard | |||
| post con | Sag, Cor MIP | 5 x 1 | ||||
| Comments: | Send thins to 3D | |||||
| CTA Runoff (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | peripheral artery disease | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | none | inspiration | diaphragm to pubic symphysis only if known AAA | |||
| arterial post-contrast | per timing bolus protocols | inspiration | diaphragm through ankles/toes | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| noncon | Ax | 5 | ||||
| arterial post con | AX | 2.5 x 1.25 | standard | |||
| lungs | AX | 2.5-3 | lung | |||
| post con | Sag, Cor MPR in overlapping body sections (A/P, thighs, lower legs) | 2 x 1 | standard | |||
| post con | Cor/Sag MIPs | 5 x 2.5 | only if not sent to 3D | |||
| Comments: | Send thins to 3D lab. | |||||
| CTA Upper extremity (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | trauma, upper extremity aneurysm, vasculitis | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | ||
| oral | -None | |||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| arterial post-contrast | Smart prep aortic arch | inspiration | depends on anatomy of interest. Affected arm should be above head. | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 64 | Care kV or 120 | Care Dose 4D | 64 x 0.6 | 1 | top to bottom | |
| GE 64 | 120 | auto MA, smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | auto MA, smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm; WW 400 WL 50 with 30% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | ||
| arterial post con | AX | 1 - 1.25 | standard | |||
| post con | Sag, Cor MPR | 2 x 1 | standard | |||
| post con | Sag, Cor MIP | 5 x 2.5 | only if not sent to 3D | |||
| Comments: | Send thins to 3D |
Abdomen - Hypervascular malignancies (4/28/21) | |||||||
|---|---|---|---|---|---|---|---|
| Indications and preparation | |||||||
| Indications: | - initial staging and follow up of neuroendocrine cancers (including carcinoid, islet cell tumors, malignant pheo) and melanoma | ||||||
| Preparation: | - NPO 2 hours prior, pick up oral contrast | ||||||
| Contrast | type | rate | volume | saline flush | |||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | |||
| oral | - Per protocol | ||||||
| Comments: | - IV access should be able to support injection rate of 4-5 cc/sec. | ||||||
| Acquisition | scan delay | respiration | anatomic coverage | ||||
| noncontrast | 0 | inspiration | - entire liver | ||||
| arterial | 35s | inspiration | - entire liver | ||||
| venous | 70s | inspiration | - as ordered, could be abdomen only, abdomen/pelvis, or chest/abdomen/pelvis | ||||
| Parameters | kVp | mAs | collimation | pitch | direction | ||
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | top to bottom | ||
| GE 64 | 120 | Auto MA, Smart MA | 64 x 0.625 | 0.984:1 | top to bottom | ||
| GE 16 | 120 | Auto MA, Smart MA | 16 x 1.25 | 1.375:1 | top to bottom | ||
| Comments: | - scan in standard algorithm WW 350 WL 50 with 40% ASIR | ||||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | preferred PACS title | |
| arterial | entire volume | AX | 2.5 x 2.5 | standard | 350/50 | AX arterial | |
| post contrast | lungs only | AX | 2.5/2.5 | lung | 1500/-600 | AX lung | |
| venous | entire volume | AX | 2.5/2.5 | standard | 350/50 | AX venous | |
| venous | entire volume | COR/SAG | 3.0/3.0 | standard | 350/50 | COR/SAG |
CT Pelvis, with contrast (4/28/21) | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - pain, cancer, abscess, pelvic DVT | |||||
| Preparation: | - NPO 2 hours prior, pick up oral contrast | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | nonionic | 2.5cc/sec | 100cc | 0 | ||
| oral | 32oz 1 hour prior | 1 hour before scan | 32oz | n/a | ||
| Comments: | - oral contrast is picked up by outpatients the night before with instructions | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | 90 sec (120 sec if pelvic venogram) | inspiration | - above iliac crest to below symphysis pubis | |||
| delay if needed | 5 min | inspiration | - above iliac crest to below symphysis pubis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | Top to bottom | |
| GE 64 | 120 | Auto MA, Smart MA | 16 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | Auto MA, Smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm WW 400 WL 50 with 40% ASIR (GE64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| Entire scan | Axial | 3.0/3.0 | Stnd | 350/40 | ||
| Entire scan | Sag/Cor | 3.0/3.0 | Stnd | 350/40 | ||
| Comments: | - no delay reformats | |||||
| Bony CT Pelvis | ||||||
| Indications and preparation | ||||||
| Indications: | - pain, fracture, abnormal X-Ray, bone lesion, trauma | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - none | |||||
| oral | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | o | Inspiration | - above iliac crest to below symphysis pubis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | ||||||
| GE 64 | 120 | Auto MA, Smart MA | 0.625 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | Auto MA, Smart MA | 2.5 x 2.5 | 0.938:1 | top to bottom | |
| Comments: Scanned in Bone algorithm WW 2000 WL 250 with 40% ASIR (GE64) | ||||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | Entire scan | Axial | 2.5/2.5 | Bone | 2000/250 | |
| GE 64 | Entire scan | Axial | 2.5/2.5 | Stnd | 350/40 | |
| GE 64, GE 16 | Entire scan | Sag/Cor | 3.0/3.0 | Bone | 2000/250 |
CT Cystogram (4/28/21) | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - bladder trauma, bladder fistula | |||||
| Preparation: | foley cather in place and bladder empty. | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | none | n/a | n/a | n/a | ||
| bladder contrast | dilute contrast per protocol (about 25 ml Omnipaque 350 in 500 cc bag of saline) | fill bladder by gravity | 300-400 ml | n/a | ||
| Comments: | ||||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | inspiration | - above iliac crest to below symphysis pubis | |||
| cystogram | after filling bladder | inspiration | - above iliac crest to below symphysis pubis | |||
| postcystogram | after emptying bladder | inspiration | - above iliac crest to below symphysis pubis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | Top to bottom | |
| GE 64 | 120 | Auto MA, Smart MA | 16 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | Auto MA, Smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm WW 400 WL 50 with 40% ASIR (GE64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| cystogram | Axial | 3.0/3.0 | Stnd | 350/40 | ||
| cystogram | Sag/Cor | 3.0/3.0 | Stnd | 350/40 | ||
| Comments: | May need reformats on non con or post cystogram per radiologist discretion. | |||||
| Bony CT Pelvis | ||||||
| Indications and preparation | ||||||
| Indications: | - pain, fracture, abnormal X-Ray, bone lesion, trauma | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - none | |||||
| oral | - none | |||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | o | Inspiration | - above iliac crest to below symphysis pubis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | ||||||
| GE 64 | 120 | Auto MA, Smart MA | 0.625 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | Auto MA, Smart MA | 2.5 x 2.5 | 0.938:1 | top to bottom | |
| Comments: Scanned in Bone algorithm WW 2000 WL 250 with 40% ASIR (GE64) | ||||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | Entire scan | Axial | 2.5/2.5 | Bone | 2000/250 | |
| GE 64 | Entire scan | Axial | 2.5/2.5 | Stnd | 350/40 | |
| GE 64, GE 16 | Entire scan | Sag/Cor | 3.0/3.0 | Bone | 2000/250 |
Liver mass (4/28/21) | |||||||
|---|---|---|---|---|---|---|---|
| Indications and preparation | |||||||
| Indications: | - hemangioma, elevated LFTs, liver lesion, Hepatocellular carcinoma (HCC, liver cancer) | ||||||
| Preparation: | - NPO 2 hours prior, oral contrast not necessary if evaluating a specific liver abnormality | ||||||
| Contrast | type | rate | volume | saline flush | |||
| intravenous | - nonionic | 4-5cc/sec | per protocol | per protocol | |||
| oral | - not required | ||||||
| Comments: | - oral contrast not required but can be used if liver work-up is part of a whole abdomen and pelvis for cancer staging. IV access should be able to support injection rate of 4-5 cc/sec. | ||||||
| Acquisition | scan delay | respiration | anatomic coverage | ||||
| noncontrast | 0 | inspiration | - entire liver | ||||
| arterial | 35s | inspiration | - entire liver | ||||
| venous | 70s | inspiration | - top of diaphragm through aortic bifurcation | ||||
| delayed | 5 min | inspiration | - liver and kidneys | ||||
| Parameters | kVp | mAs | collimation | pitch | direction | ||
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | top to bottom | ||
| GE 64 | 120 | Auto MA, Smart MA | 64 x 0.625 | 0.984:1 | top to bottom | ||
| GE 16 | 120 | Auto MA, Smart MA | 16 x 1.25 | 1.375:1 | top to bottom | ||
| Comments: | - scan in standard algorithm WW 350 WL 50 with 40% ASIR | ||||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | preferred PACS title | |
| non contrast | entire volume | AX | 2.5/2.5 | standard | 350/50 | AX noncon | |
| non contrast | entire volume | COR | 3.0/3.0 | standard | 350/50 | COR noncon | |
| post contrast | entire volume | AX | 2.5 x 2.5 | standard | 350/50 | AX arterial/AX venous | |
| post contrast | lungs only | AX | 2.5/2.5 | lung | 1500/-600 | AX lung | |
| post contrast | entire volume | COR/SAG | 3.0/3.0 | standard | 350/50 | COR venous/SAG venous | |
| Delay | entire volume | AX | 2.5/2.5 | standard | 350/50 | AX delay | |
| Delay | entire volume | COR | 3.0/3.0 | standard | 350/50 | COR delay |
Chest CT, without contrast (4/28/21) | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | Lung nodule/mass, lung or metastatic cancer, pneumonia, shortness or breath, interstitial lung disease, chest trauma, abnormal chest radiograph, pleural effusion | |||||
| Preparation: | - none | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | inspiration | - above lung apices through adrenals | |||
| Parameters | kVp | mA | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 1.2 | top to bottom | |
| Siemens 64 | Care kV | Care Dose 4D | 64 x 0.6 | 1.2 | top to bottom | |
| Siemens 16 | 120 | Care Dose 4D | 16 x 1.5 | 0.6 | top to bottom | |
| GE 64 | 120 | Auto MA, Smart MA | 64 x 0.625 | 1.375 | top to bottom | |
| GE 16 | 120 | Auto MA, Smart MA | 16 x 1.25 | 1.375 | top to bottom | |
| Comments: | - scan in standard algorithm WW 400 WL 50 with 40% ASIR (GE64) | |||||
| Reconstructions | Prefered PACS title | plane | thickness/increment | algorithm | window W/L | |
| AX/COR/SAG lung | AX/COR/SAG | 3.0/3.0 | Lung/B60f sharp | 1500/-600 | ||
| AX standard | AX | 3.0/3.0 | Standard/B20f smooth | 350/50 | ||
| AX thin | AX | 1.0/1.0 | Standard/B20f smooth | 1500/-600 | ||
| AX MIP | AX MIP | 8.0/3.0 | Standard/B20f smooth | 1500/-600 | ||
| Comments: | - MAX CTDI: 25 | |||||
| Chest CT, with contrast (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | Lung nodule/mass, lung or metastatic cancer, pneumonia, shortness or breath, interstitial lung disease, chest trauma, abnormal chest radiograph, pleural effusion | |||||
| Preparation: | - No solids 2 hours prior to scan | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 2.5cc/sec | 100 mL | 0 | ||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| post-contrast | Smart Prep Aorta | inspiration | - above lung apices through adrenals | |||
| OTHERWISE SAME AS NON-CON ABOVE | ||||||
| High resolution Chest CT (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | - interstital lung disease, bronchiectasis, emphysema, alveolitis, asbestosis, sarcoid | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| - none | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | See below | - supine, through entire lungs / prone, carina through lung bases | |||
| Parameters | kVp | mA | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Inspiration supine | Care kV | Care Dose 4D | 128 x 0.6 | 1.2 | top to bottom | |
| Expiration and Prone | Care kV | Care Dose 4D | 2 x 1.0 | axial - 10 mm spacing | top to bottom | |
| Siemens 64 | ||||||
| Inspiration supine | Care kV | Care Dose 4D | 64 x 0.6 | 1.2 | top to bottom | |
| Expiration and Prone | Care kV | Care Dose 4D | 2 x 1.0 | axial - 10 mm spacing | top to bottom | |
| Siemens 16 | ||||||
| Inspiration supine | 120 | Care Dose 4D | 16 x 1.5 | 1.5 | top to bottom | |
| Expiration and Prone | 120 | Care Dose 4D | 2 x 0.75 | axial - 10 mm spacing | top to bottom | |
| GE 16 | ||||||
| Inspiration supine | 120 | Smart MA | 16 x 1.25 | 1.375 | top to bottom | |
| Expiration and Prone | 120 | Smart MA | 2 x 0.625 | axial - 10 mm spacing | top to bottom | |
| GE 64 | ||||||
| Inspiration supine | 120 | Smart MA | 64 x 0.625 | 1.375 | top to bottom | |
| Expiration and Prone | 120 | Smart MA | 2 x 0.625 | axial - 10 mm spacing | top to bottom | |
| Comments: | - MAX CTDI: 36 | |||||
| - Coach patient prior to scan to achieve MAX expiration during expiratory scan. | ||||||
| - May skip expiratory acquisition if patient has had HRCT in our system in the past 3 yrs. | ||||||
| Reconstructions | Prefered PACS title | plane | thickness/increment | algorithm | window W/L | |
| Inspiratory supine | AX thin | AX | 1.0/1.0 | Bone+/B80 | 1500/-600 | |
| Inspiratory supine | AX standard | AX | 3.0/3.0 | Standard/B30 | 350/50 | |
| Inspiratory supine | AX MIP | AX MIP | 8.0/3.0 | Standard/B20f smooth | 1500/-600 | |
| Expiratory | Expiratory | AX | 1.0/10 | Bone+/B80 | 1500/-600 | |
| Inspiratory prone | Prone | AX | 1.0/10 | Bone+/B80 | 1500/-600 | |
| Inspiratory supine | COR | COR | 3.0/3.0 | Bone+/B80 | 1500/-600 | |
| Inspiratory supine | SAG | SAG | 3.0/3.0 | Bone+/B80 | 1500/-600 | |
| Comments: | ||||||
| Pulmonary CT angiogram (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | - chest pain, SOB, pulmonary embolus | |||||
| Preparation: | - No solids 2 hours prior to scan | |||||
| Contrast | type | rate | volume | saline flush | ||
| Intravenous | - nonionic | 5 mL/sec | 75 mL | 50 mL | ||
| Comments: | 18G IV in AC or higher in the arm preferred, at least 20G necessary. | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| post-contrast | bolus track PA | stop breathing | Thoracic inlet through lung bases. Scan caudal to cranial. | |||
| Parameters | kVp | mA | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 1.1 | bottom to top | |
| Siemens 16 | 120 | Care Dose 4D | 16 x 0.75 | 0.9 | bottom to top | |
| GE 64 | 120 | Auro MA, Smart MA | 64 x 0.625 | 1.375 | bottom to top | |
| GE 16 | 120 | Auro MA, Smart MA | 16 x 1.25 | 1.75 | bottom to top | |
| Comments: | 40% ASIR (GE64) | |||||
| Reconstructions | Prefered PACS title | plane | thickness/increment | algorithm | window W/L | |
| AX standard | AXIAL | 1.5/1.5 | B20f/standard | 600/100 | ||
| AX lung | AXIAL | 3.0/3.0 | B60f/lung | 1500/-600 | ||
| SAG lung | SAG | 3.0/3.0 | B60f/lung | 1500/-600 | ||
| COR MIP | COR | 10.0/3.0 | B20f/standard | 670/125 | ||
| AX MIP | AXIAL | 10.0/3.0 | B20f/standard | 670/125 | ||
| Comments: | - MAX CTDI: 50 | |||||
| Double rule-out CT angiogram (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | - chest pain, SOB; evaluate for PE or aortic dissection | |||||
| Preparation: | - No solids 2 hours prior to scan | |||||
| ACQUISITION IS THE SAME AS PE CT, WITH ONLY DIFFERENCES NOTED BELOW | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| post-contrast | bolus track left atrium | stop breathing | Thoracic inlet through lung bases. Scan cranial to caudal. | |||
| Lung cancer screening and low-dose pulmonary nodule follow-up (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | - Lung cancer screening, pulmonary nodule follow-up | |||||
| Preparation: | - none | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | inspiration | - above lung apices to 2 cm below costophrenic sulci. Adrenals do not need to be imaged. | |||
| Parameters BMI<20 | kVp | mA | collimation | pitch | direction | |
| Siemens 128 | 120 | 20 | 128 x 0.6 | 1.2 | top to bottom | |
| Siemens 64 | 120 | 20 | 64 x 0.6 | 1.2 | top to bottom | |
| GE 64 | 120 | 25 | 64 x 0.625 | 1.375 | top to bottom | |
| GE 16 | 120 | 25 | 16 x 1.25 | 1.375 | top to bottom | |
| Parameters BMI 20-30 | kVp | mA | collimation | pitch | direction | |
| Siemens 128 | 120 | 25 | 128 x 0.6 | 1.2 | top to bottom | |
| Siemens 64 | 120 | 25 | 64 x 0.6 | 1.2 | top to bottom | |
| GE 64 | 120 | 30 | 64 x 0.625 | 1.375 | top to bottom | |
| GE 16 | 120 | 30 | 16 x 1.25 | 1.375 | top to bottom | |
| Parameters BMI>30 | kVp | mA | collimation | pitch | direction | |
| Siemens 128 | 120 | 35 | 128 x 0.6 | 1.2 | top to bottom | |
| Siemens 64 | 120 | 35 | 64 x 0.6 | 1.2 | top to bottom | |
| GE 64 | 120 | 40 | 64 x 0.625 | 1.375 | top to bottom | |
| GE 16 | 120 | 60 | 16 x 1.25 | 1.375 | top to bottom | |
| Reconstructions | Prefered PACS title | plane | thickness/increment | algorithm | window W/L | |
| AX thin | AX | 1.0/1.0 | B20f/standard | 1500/-600 | ||
| AX MIP | AX MIP | 8.0/3.0 | B20f/standard | 1500/-600 | ||
| AX standard | AX | 5.0/5.0 | B20f/standard | 350/50 | ||
| COR/SAG | COR/SAG | 3.0/3.0 | B60f/lung | 1500/-600 | ||
| Comments: | Max dose: </=3 mSv small, </=5 mSv large, dlp <88, report |
CT Urogram - Split Bolus Technique (4/28/21) | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - hematuria | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Comments: | -Perform split bolus technique on all patients under 30 years of age. If GFR/CrCl is less than 60 than perform standard CT urogram with instituion implemented contrast guidelines. Place patient prone following first injection for better filling of distal ureters and bladder. Place patient back in supine position before scanning the delayed phase. | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 3-4 cc/sec | Split Bolus - 120 cc (50 cc initially, wait 7 minutes, then 70 cc) | 0 | ||
| oral | - water | 20-30 min prior to scan | 32 oz | 0 | ||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | 0 | inspiration | - above kidneys through pubic symphysis | |||
| delayed post-contrast | 7-10 min after first injection and 100 sec after 2nd injection | inspiration | - above kidneys through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | top to bottom | |
| GE 64 | 120 | Auto MA, Smart MA | 64 x 3.75 (non con scan) 64 x 0.625 (post con scan) | 1.375:1 | top to bottom | |
| GE 16 | 120 | Auto MA, Smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm WW 350 WL 50 with 40% ASIR (GE 64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| noncontrast | entire volume | AX | 2-3/2-3 | standard | AX noncon | |
| Delay | entire volume | AX | 2-3/2-3 | standard | AX delay | |
| Delay | lungs only | AX | 2-3/2-3 | lung | AX lung | |
| Delay | entire volume | COR/SAG | 3.0/3.0 | standard | COR/SAG | |
| CT Urogram - Standard Technique (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | - hematuria | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Comments: | -Standard CT urogram protocol for all patients over 30 years of age. Use insituition established guidelines regarding contrast administration. Place patient prone following imaging of nephrographic phase for better filling of distal ureters and bladder. Place patient back in supine position before scanning the delayed phase. | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 3-4 cc/sec | Per instituition guidelines | 0 | ||
| oral | - water | 20-30 min prior to scan | 32 oz | 0 | ||
| Acquisitions | ||||||
| noncontrast | 0 | inspiration | - above kidneys through pubic symphysis | |||
| nephrographic phase | 80-100 sec | inspiration | - kidneys | |||
| delayed post-contrast | 7 min | inspiration | - above kidneys through pubic symphysis | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | top to bottom | |
| GE 64 | 120 | Auto MA, Smart MA | 64 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | Auto MA, Smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | ||||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| noncontrast | entire volume | AX | 2-3/2-3 | standard | AX noncon | |
| nephrographic phase | entire volume | AX | 2-3/2-3 | standard | AX post | |
| delayed post-contrast | entire volume | AX | 2-3/2-3 | standard | AX delay | |
| delayed post-contrast | Lungs only | AX | 2-3/2-3 | Lung | AX lung | |
| nephrographic phase | entire volume | Sag/Cor | 3.0/3.0 | standard | COR/SAG post | |
| delayed post-contrast | entire volume | Sag/Cor | 3.0/3.0 | standard | COR/SAG delay | |
| Renal stone CT (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | Painful hematuria, Flank pain, Back pain, HX of stones | |||||
| Preparation: | None | |||||
| Contrast | type | rate | volume | saline flush | ||
| oral / intravenous | - none | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | 0 | inspiration | Top of diaphragm through bladder | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 3.0x/ 128x0.6 | 0.6 | top to bottom | |
| GE 64 | 120 | Auto MA, Smart MA | 0.625 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | Auto MA, Smart MA | 0.625 x 0.625 | 1.375:1 | top to bottom | |
| Comments: | Scanned in Stnd algorithm WW 350 WL 50 with 40% ASIR | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| entire volume | AX | 3.0/3.0 | Stnd | AX standard | ||
| lungs only | AX | 3.0/3.0 | Lung | AX lung | ||
| entire volume | COR/SAG | 3.0/3.0 | Stnd | COR/SAG | ||
| Comments: | ||||||
| Renal stone CT - low dose (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | - painful hematuria, flank pain, back pain, history of stones | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| oral / intravenous | - none | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | inspiration | - kidneys through bladder | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 3.0x/ 128x0.6 | 0.6 | top to bottom | |
| GE 64 | 140 | 30 | 1.25 x 1.25 | 1.375:1 | top to bottom | |
| GE 16 | 140 | 30 | 1.25 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | Scanned in Stnd algorithm WW 350 WL 50 with 40% ASIR | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| entire volume | AX | 5.0/5.0 | standard | AX standard | ||
| lungs only | AX | 3.0/3.0 | lung | AX lung | ||
| entire volume | COR/SAG | 3.0/3.0 | standard | COR/SAG | ||
| CT Renal Mass (4/28/21) | ||||||
| Indications and preparation | ||||||
| Indications: | - Renal Mass | |||||
| Preparation: | - NPO 2 hours prior | |||||
| Comments: | ||||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 3-4 cc/sec | 100 cc | 0 | ||
| oral | - water | 10 min prior to scan | 16oz | 0 | ||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | 0 | inspiration | - kidneys | |||
| arterial phase | 25-30 sec | inspiration | - kidneys | |||
| nephrographic phase | 100 sec | inspiration | - kidneys | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 3.0x/ 128x0.6 | 0.6 | top to bottom | |
| GE 64 | 120 | Auto MA, Smart MA | 0.625 x 0.625 | 1.375:1 | top to bottom | |
| GE 16 | 120 | Auto MA, Smart MA | 0.625 x 0.625 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm WW 350 WL 50 with 40% ASIR (GE 64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| noncontrast | entire volume | AX | 2-3/2-3 | standard | AX noncon | |
| arterial phase | entire volume | AX | 2-3/2-3 | standard | AX arterial | |
| nephrographic phase | lungs only | AX | 2-3/2-3 | lung | AX lung | |
| nephrographic phase | entire volume | AX | 2-3/2-3 | standard | AX post | |
| nephrographic phase | entire volume | COR/SAG | 3.0/3.0 | standard | COR/SAG |
Adrenal CT, with contrast (4/28/21) | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - adrenal mass, cysts | |||||
| Preparation: | - NPO 2 hours prior to scan | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 3.0cc/sec | 100cc | 0 | ||
| oral | - none | |||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | 0 | inspiration | - above adrenals through kidneys | |||
| COMMENT: | Check with radiologist to see if post contrast imaging is necessary. | |||||
| post contrast | 60 sec | inspiration | - above diaphragm through bifurcation | |||
| delayed | 15 min | inspiration | - above adrenals through kidneys | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | top to bottom | |
| GE 64 | 120 | Auto MA/ Smart MA | 64 x 0.625 | 0.984:1 | top to bottom | |
| GE 16 | 120 | Auto MA/ Smart MA | 16 x 1.25 | 1.375:1 | top to bottom | |
| Comments: | - scan in standard algorithm WW 350 WL 50 with 40% ASIR (GE 64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | preferred PACS title | |
| noncontrast | entire volume | AX | 2.5/2.5 | standard | AX noncon | |
| noncontrast | entire volume | COR | 3.0/3.0 | standard | COR noncon | |
| post contrast | entire volume | AX | 2.5/2.5 | standard | AX post | |
| post contrast | lungs only | AX | 3.0/3.0 | lung | AX lung | |
| post contrast | entire volume | COR/SAG | 3.0/3.0 | standard | COR post/SAG post | |
| delay | entire volume | AX | 2.5/2.5 | standard | AX delay | |
| delay | entire volume | COR | 3.0/3.0 | standard | COR delay |
Pancreatic mass CT (4/28/21) | |||||||
|---|---|---|---|---|---|---|---|
| Indications and preparation | |||||||
| Indications: | - pancreatic mass, cyst (pancreatitis usually done as routine abdomen CT unless looking for necrosis) | ||||||
| Preparation: | - NPO 2 hours prior/ Water for oral contrast when evaluating mass, positive oral contrast when evaluating pancreatitis. | ||||||
| Contrast | type | rate | volume | saline flush | |||
| intravenous | - nonionic | 4-5cc/sec | per protocol. | 0 | |||
| oral | - water: 32oz 1 hour prior; 32oz on arrival; 10oz right before scan | 32oz and 10oz | n/a | ||||
| Acquisitions | scan delay | respiration | anatomic coverage | ||||
| noncontrast | 0 | inspiration | Entire Pancreas | ||||
| initial post-contrast | Smart Prep pancreas (about 30 sec) | inspiration | Small FOV pancreas | ||||
| portal venous post-contrast | 60-70 sec | inspiration | diapragm to bifurcation if abdomen ordered, otherwise abdomen and pelvis. | ||||
| Parameters | kVp | mAs | collimation | pitch | direction | ||
| Siemens 128 | Care kV | Care Dose 4D | 128 x 0.6 | 0.6 | top to bottom | ||
| GE 64 | 120 | Auto MA/ Smart MA | 64 x 0.625 | 0.984:1 | top to bottom | ||
| GE 16 | 120 | Auto MA/ Smart MA | 16 x 1.25 | 1.375:1 | top to bottom | ||
| Comments: | - scan in standard algorithm WW 350 WL 50 with 40% ASIR (GE 64) | ||||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | preferred PACS title | |
| noncontrast | entire volume | AX | 2.5/2.5 | standard | 350/50 | AX noncon | |
| noncontrast | entire volume | COR | 3.0/3.0 | standard | 350/50 | COR noncon | |
| post contrast | entire volume | AX | 2.5/2.5 | standard | 350/50 | AX post | |
| post contrast | lungs only | AX | 3.0/3.0 | lung | 1500/-600 | AX lung | |
| post contrast | entire volume | COR/SAG | 3.0/3.0 | standard | 350/50 | COR post/SAG post | |
| delay | entire volume | AX | 2.5/2.5 | standard | 350/50 | AX delay | |
| delay | entire volume | COR | 3.0/3.0 | standard | 350/50 | COR delay | |
| Comments: | Coronal and Sagittal MIPS of the arterial phase can be performed if a dedicated CTA is ordered for cancer staging. |
C-spine CT, without contrast | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - fracture, MVA, post-myleogram, neck pain, trauma | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| - none | ||||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - above C-1 through mid T-1 | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | 120 | 280 | 0.75 | 0.65 | Recon 1-B60s | |
| Siemens 4 | 140 | 220 | 1 | 0.75 | Recon 1-B60s | |
| GE 64 | 120 | Auto MA | 0.625 x 0.625 | 0.516:1 | Top to Bottom | |
| GE 16 | 120 | Auto MA | 2.5 x 2.5 | 0.562.1 | Top to Bottom | |
| Comments: | - scan in bone algorithm WW 2000 WL 200 with 40% ASIR (GE64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | Entire Scan | AX | 2.5/2.5 | Stnd | 500/90 | |
| GE 64, GE 16 | Entire Scan | AX | 2.5/2.5 | Bone Plus | 2000/200 | |
| GE 64, GE 16 | Entire Scan | COR/SAG | 3.0/3.0 | Bone | 2000/200 | |
| Siemens 16 and 4 | Recon 2 | kernel B20 | 3.0/3.0 | Abdomen | ||
| Recon 3 | kernel B60s | 1.25/0.6 | Bone | |||
| Comments: | - Siemens sagittal (angled to C4-5 disc space) and coronal reformats 3.0x3.0 off of recon 3 | |||||
| T-spine | ||||||
| Indications and preparation | ||||||
| Indications: | - fracture, MVA, post-myleogram, back pain, trauma | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| - none | ||||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - above T-1 through mid L-1 | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | 120 | 280 | 0.75 | 0.65 | Recon 1-B60s | |
| Siemens 4 | 140 | 250 | 1 | 0.75 | Recon 1-B60s | |
| GE 64 | 140 | Auto | 0.625 x 0.625 | 0.516:1 | Top to Bottom | |
| GE 16 | 140 | Auto | 2.5 x 2.5 | 0.562:1 | Top to Bottom | |
| Comments: | ||||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | Entire Scan | AX | 2.5/2.5 | Stnd | 500/90 | |
| GE 64, GE 16 | Entire Scan | AX | 2.5/2.5 | Bone Plus | 2000/200 | |
| GE 64, GE 16 | Entire Scan | COR/SAG | 3.0/3.0 | Bone | 2000/200 | |
| Siemens 16 and 4 | Recon 2 | kernel B20 | 3.0/3.0 | Abdomen | ||
| Recon 3 | kernel B60s | 1.0/0.6 | Bone | |||
| Comments: | - scan in bone algorithm WW 2000 WL 200 with 40% ASIR (GE64) | |||||
| - Siemens - sagittal (angled to C4-5 disc space) and coronal reformats 3.0x3.0 off of recon 3. | ||||||
| L-spine | ||||||
| Indications and preparation | ||||||
| Indications: | - fracture, MVA, post-myleogram, back pain, trauma | |||||
| Preparation: | - none | |||||
| Contrast | type | rate | volume | saline flush | ||
| - none | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - mid T-12 through S-1 | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | 120 | 280 | 0.75 | 0.65 | Recon 1-B60s | |
| Siemens 4 | 140 | 250 | 1 | 0.75 | Recon 1-B60s | |
| GE 64 | 140 | Auto | 0.625 x 0.625 | 0.516:1 | Top to Bottom | |
| GE 16 | 140 | Auto | 2.5 x 2.5 | 0.562:1 | Top to Bottom | |
| Comments: | - scan in bone algorithm WW 2000 WL 200 with 40% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | Entire Scan | AX | 2.5/2.5 | Stnd | 500/90 | |
| GE 64, GE 16 | Entire Scan | AX | 2.5/2.5 | Bone Plus | 2000/200 | |
| GE 64, GE 16 | Entire Scan | COR/SAG | 3.0/3.0 | Bone | 2000/200 | |
| Siemens 16 and 4 | Recon 2 | kernel B20 | 3.0/3.0 | Abdomen | ||
| Recon 3 | kernel B60s | 1.0/0.6 | Bone | |||
| Comments: | - Siemens - sagittal and coronal reformats 3.0x3.0 off of recon 3. |
Upper Extremity CT, without contrast | ||||||
|---|---|---|---|---|---|---|
| Indications and preparation | ||||||
| Indications: | - pain, fracture, trauma, abnormal X-Ray | |||||
| Contrast | type | rate | volume | saline flush | ||
| - none | ||||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - start above joint and end below joint | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | ||||||
| GE 64 | 120 | Auto | 0.625 x 0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto | 2.5 x 2.5 | 0.938:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2000 WL 200 with 40% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | standard | 400/50 | |
| GE 64, GE 16 | entire volume | AX | 2.5/2.5 | bone plus | 2000/200 | |
| GE 64, GE 16 | entire volume | COR/SAG | 2.0/2.0 | bone | 2000/200 | |
| Upper Extremity CT, with contrast | ||||||
| Indications and preparation | ||||||
| Indications: | - abscess, redness and/or swelling of affected extremity, mass | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 2.5cc/sec | 100cc | 0 | ||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | 90s | n/a | - start above joint and end below joint | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | ||||||
| GE 64 | 120 | Auto | 0.625 x 0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto | 2.5 x 2.5 | 0.938:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2000 WL 200 with 40% ASIR (GE64) | |||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | standard | 400/50 | |
| GE 64, GE 16 | entire volume | AX | 2.5/2.5 | bone plus | 2000/200 | |
| GE 64, GE 16 | entire volume | COR/SAG | 2.0/2.0 | bone | 2000/200 | |
| Lower Extremity CT, without contrast | ||||||
| Indications and preparation | ||||||
| Indications: | - pain, fracture, trauma, abnormal X-Ray | |||||
| Contrast | type | rate | volume | saline flush | ||
| - none | ||||||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| noncontrast | n/a | n/a | - start above joint and end below joint | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | ||||||
| GE 64 | 120 | Auto | 0.625 x 0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto | 2.5 x 2.5 | 0.938:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2000 WL 200 with 40% ASIR (GE64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | standard | 400/50 | |
| GE 64, GE 16 | entire volume | AX | 2.5/2.5 | bone plus | 2000/200 | |
| GE 64, GE 16 | entire volume | COR/SAG | 2.0/2.0 | bone | 2000/200 | |
| Lower Extremity CT, with contrast | ||||||
| Indications and preparation | ||||||
| Indications: | - abscess, redness and/or swelling of affected extremity, mass | |||||
| Contrast | type | rate | volume | saline flush | ||
| intravenous | - nonionic | 2.5cc/sec | 100cc | 0 | ||
| Acquisition | scan delay | respiration | anatomic coverage | |||
| post-contrast | 90s | n/a | - start above joint and end below joint | |||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | ||||||
| GE 64 | 120 | Auto | 0.625 x 0.625 | 0.531:1 | top to bottom | |
| GE 16 | 120 | Auto | 2.5 x 2.5 | 0.938:1 | top to bottom | |
| Comments: | - scan in bone algorithm WW 2000 WL 200 with 40% ASIR (GE64) | |||||
| Reconstruction | coverage | plane | thickness/increment | algorithm | window W/L | |
| GE 64 | entire volume | AX | 2.5/2.5 | standard | 400/50 | |
| GE 64, GE 16 | entire volume | AX | 2.5/2.5 | bone plus | 2000/200 | |
| GE 64, GE 16 | entire volume | COR/SAG | 2.0/2.0 | bone | 2000/200 | |
| Lower extremity CT angiogram | ||||||
| Indications and preparation | ||||||
| Indications: | Gourley/Cockerill to complete .... | |||||
| Preparation: | ||||||
| Contrast | type | rate | volume | saline flush | ||
| Intravenous | ||||||
| Comments: | ||||||
| Acquisitions | scan delay | respiration | anatomic coverage | |||
| post-contrast | ||||||
| Parameters | kVp | mAs | collimation | pitch | direction | |
| Siemens 128 | ||||||
| Siemens 16 | ||||||
| GE 64 | ||||||
| GE 16 | ||||||
| Comments: | ||||||
| Reconstructions | coverage | plane | thickness/increment | algorithm | window W/L | |
| Siemens | ||||||
| GE | ||||||
| Comments: |