|Specific Anatomic Region||Colon|
|Author||Elliot K. Fishman, MD|
|Reference Source||JHU protocol|
|Scanner Used||Siemens Somatom Sensation 16|
|KV / Effective mAs / Rotation time (sec)||SUPINE 120 / 200 / 0.5||PRONE 120 / 200 / 0.5|
|Detector Collimation (mm)||0.75 - 1.5||0.75 - 1.5|
|Slice Thickness (mm)||1.0 - 2.0||1.0 - 2.0|
|Feed / Rotation (mm)||12.0||12.0|
|IV Contrast Volume and Type||Not needed but can be helpful|
|Scan Delay (sec)||N/A|
|3D Technique Used||1. Use MPR to look at axial images and coronal/sagittal images and their "colonoscopy program" for the fly through. |
2. The key is patient prep and we use the fleet 1 (one) prep kit.
3. Colonic distension is critical and we put around 2000 cc of air into the colon (or more as needed).
| Comment: - Some people might consider this excessive and do 3mm thick sections but we prefer 1mm. The mAs can be dropped to 100-120 for a low dose study.|
Recon- Sup/ prone 5x5 for filming
Recon Lung/ liver 5x5 for filming