Specific Anatomic Region

Hepatic Vascular Tree

Application

Create a vascular map for preoperative evaluation of the liver

Author

Bluemke D et al.

Reference Source

Radiology 1993; 186:576-579

Scanner Used

Siemens Somatom Plus 4

Injection Rate

3cc/sec

Contrast Volume and Type

150cc of Omnipaque 350

Area Scanned

Span of entire liver

Scan Delay

30sec/60sec (approx)

Length of Spiral (time)

40sec

Slice Thickness

3mm

Table Speed/Pitch

5-6mm/sec with a pitch of up to 2

Reconstruction Interval

1-3mm

3D Technique Used

Volume rendering

Comment: Volume rendering can display both tumor and vascular structures in a single image. In these cases a dual-phase spiral CT is obtained with the first spiral in the arterial phase and the second spiral in the portal venous phase. The time between the two spirals should ideally be minimized.