CT is us- Multidetector CT Protocols

Multidetector CT:
Vascular:

Abdominal aorta: Evaluate known or suspected AAA

Specific Anatomic Region Abdominal aorta

Application Evaluate known or suspected AAA

Author Fishman EK

Reference Source Personal Communication

Scanner Used Siemens 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) / Pitch 12.5 / 5 or 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 sec

3D Technique Used Volume rendering

Comment: -This protocol allows a compromise between length of study and 3D detail. When using 3 mm collimation, the entire abdominal aorta (and iliacs aa.) are scanned in 16-20 seconds.

Specific Anatomic Region	Abdominal aorta
Application	Evaluate known or suspected AAA
Author	Fishman EK
Reference Source	Personal Communication
Scanner Used	Siemens 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) / Pitch	12.5 / 5 or 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 sec
3D Technique Used	Volume rendering
Comment: -This protocol allows a compromise between length of study and 3D detail. When using 3 mm collimation, the entire abdominal aorta (and iliacs aa.) are scanned in 16-20 seconds.