Head CT venogram

Head CT Venogram

Application

venous sinus thrombosis, AV fistula, preoperative venous mapping

Landmarks

vertex through C2 vertebra

Oral

none

VI

100 cc Omnipaque or Isovue 300, 80 cc Omnipaque 350, 80 cc Isovue 370, or equivalent agent

Rate

4 cc/sec

Delay

30 seconds (fixed scan delay)

Scan

axial 0.5 mm thickness (helical)

Image Order

  • Axial: cranial → Caudal
  • Coronal: anterior → Posterior
  • Sagittal: right → Left

Comments

Reconstructions (send to PACS:):

  • axial 1x1 mm (standard)
  • coronal 1x1 mm (standard)
  • sagittal 1 x1 mm (standard)
  • 3D MIP (360 degree horizontal & vertical tumble)

Note:

remove neck/ear jewelry, if present. If unable, please document reason.

approved on 9/2/24