CT is us- Multidetector CT Protocols

Multidetector CT:
Adrenal:

R/O Adrenal Mass

Specific Anatomic Region Adrenal Glands

Application R/O Adrenal Mass

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) 4x 2.5 or 4x1.0

Slice Thickness (mm) 3 or 1

Data Reconstruction Interval (mm) 2 or 1

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

Oral Contrast 750 cc water

IV Contrast Volume and Type N/A

Injection Rate N/A

Scan Delay (sec) N/A

3D Technique Used Not routinely needed

Comment:

Noncontrast studies are ideal for determining whether a lesion is an adenoma based on its CT attenuation. (< 18 HU)

IV contrast may be helpful if there is a high clinical suspicion of a neoplasm, as vascular involvement can be identified.

Enhancement patterns may be valuable in defining a pheochromcytoma (very vascular).

Specific Anatomic Region	Adrenal Glands
Application	R/O Adrenal Mass
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)	4x 2.5 or 4x1.0
Slice Thickness (mm)	3 or 1
Data Reconstruction Interval (mm)	2 or 1
Table Speed (mm per rotation) / Pitch	12.5 / 5 or 6/6
Oral Contrast	750 cc water
IV Contrast Volume and Type	N/A
Injection Rate	N/A
Scan Delay (sec)	N/A
3D Technique Used	Not routinely needed
Comment: Noncontrast studies are ideal for determining whether a lesion is an adenoma based on its CT attenuation. (< 18 HU) IV contrast may be helpful if there is a high clinical suspicion of a neoplasm, as vascular involvement can be identified. Enhancement patterns may be valuable in defining a pheochromcytoma (very vascular).