Specific anatomic region Neck
Application R/O mass or nodes or abscess
Author Elliot K Fishman, MD
Reference Source JHU Protocol
Scanner Used Siemens Sensation 64
KV/Effective mAs/ Rotation time (sec) 120/ 200 / 1.0
Detector Collimation (mm) 0.6
Slice thickness (mm) 3mm and .75mm (for 3D)
Pitch 0.9
Kernel B31f medium smotth + : Larynx window
B70s very sharp : Head Bone window
Reconstruction interval 3mm x 3mm ST and Bone & .5mm (3D)
Image order (acquisition) Cr-ca
Oral contrast N/A
IV contrast volume and type 100-120 cc Omnipaque 350
Injection rate 3.0-2.5 cc/sec
Scan delay (sec) Depends on patient, but in 30 sec range
3D technique used N/A
Comment:
  • If a mass is seen 3D mapping ca be done by reconstructing data at .75mm slice thickness and .5mm intervals.
  • Scan delay of minimum 30 seconds is needed to visualize both carotid artery and jugular vein.