Specific Anatomic RegionPortal Vein
ApplicationPortal vein patency
AuthorFishman EK
Reference SourcePersonal Communication
Scanner UsedSiemens Plus4 Volume Zoom
KV / mAs / Time per Rotation (sec)120/165/.5
Detector Collimation (mm)1 or 2.5
Slice Thickness (mm)1.25 or 3
Data Reconstruction Interval (mm)1 or 2
Table Speed (mm per rotation) / Pitch6/6 or 12.5/5
Oral Contrast750 cc of water
IV Contrast Volume and Type120 cc of Omnipaque 350
Injection Rate3 cc/sec
Scan Delay (sec)50-60 sec
3D Technique UsedVolume rendering
This is a portal phase only study, and is a focused examination. In this study, it is better to be "late" in the acquisition, than "early." If in doubt, wait an extra 10-15 seconds. Occasionally delayed images may be helpful.