CT is us- Multidetector CT Protocols

Multidetector CT:
Vascular:

Thoracic aorta: R/O dissection

Specific Anatomic Region Thoracic aorta

Application R/O dissection

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 or 3

Data Reconstruction Interval (mm) 1 or 2

Table Speed (mm per rotation) / Pitch 6 / 6 or 12.5 / 5

Oral Contrast N/A

IV Contrast Volume and Type 120 cc of Omnipaque 350

Injection Rate 3 cc / sec

Scan Delay (sec) 25-30 sec

3D Technique Used Volume rendering

Comment: -In the case of a thoracic aorta-only study, we begin scanning at the level of the diaphragm, and scan cranially. This minimizes/eliminates artifacts related to contrast in the axillary veins.

Specific Anatomic Region	Thoracic aorta
Application	R/O dissection
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 or 3
Data Reconstruction Interval (mm)	1 or 2
Table Speed (mm per rotation) / Pitch	6 / 6 or 12.5 / 5
Oral Contrast	N/A
IV Contrast Volume and Type	120 cc of Omnipaque 350
Injection Rate	3 cc / sec
Scan Delay (sec)	25-30 sec
3D Technique Used	Volume rendering
Comment: -In the case of a thoracic aorta-only study, we begin scanning at the level of the diaphragm, and scan cranially. This minimizes/eliminates artifacts related to contrast in the axillary veins.