CT is us- Multidetector CT Protocols

Multidetector CT:
Vascular:

G.I. Tract: R/O Mesenteric ischemia

Specific Anatomic Region G.I. Tract

Application R/O Mesenteric ischemic

Author Fishman EK

Reference Source Personal Communication

Scanner Used Siemens 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) / Pitch 6 / 6

Oral Contrast 750 cc of water

IV Contrast Volume and Type 120 cc of Omnipaque 350

Injection Rate 3 cc / sec

Scan Delay (sec) 25-30 sec and 60 / sec

3D Technique Used Volume rendering

Comment: -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.

Specific Anatomic Region	G.I. Tract
Application	R/O Mesenteric ischemic
Author	Fishman EK
Reference Source	Personal Communication
Scanner Used	Siemens 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) / Pitch	6 / 6
Oral Contrast	750 cc of water
IV Contrast Volume and Type	120 cc of Omnipaque 350
Injection Rate	3 cc / sec
Scan Delay (sec)	25-30 sec and 60 / sec
3D Technique Used	Volume rendering
Comment: -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.