Specific Anatomic RegionG.I. Tract
ApplicationR/O Mesenteric ischemic  
AuthorFishman EK
Reference SourcePersonal Communication
Scanner UsedSiemens Plus4 Volume Zoom
KV / mAs / Time per Rotation (sec)120/125/.5 (dual phase)
Detector Collimation (mm)1
Slice Thickness (mm)1.25
Data Reconstruction Interval (mm)1
Table Speed (mm per rotation) / Pitch6/6
Oral Contrast750 cc of water
IV Contrast Volume and Type120 cc of Omnipaque 350 
Injection Rate3 cc/sec
Scan Delay (sec)25-30 sec and 60/sec
3D Technique UsedVolume rendering
We are currently investigating this protocol for intestinal ischemia, by doing a dual phase study with 3D CT angiography. The arterial phase provides a vascular map, and the portal phase is most useful for evaluation of bowel wall enhancement as well as to look for SMV patency.