SPIRAL CT PROTOCOLS

Adrenal Glands

R/O adrenal mass Printer-ready protocol

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).