Ct is us- CT Protocols
Spiral CT Protocols

Liver

Evaluate liver for metastases following cryosurgery

Specific Anatomic Region

Liver

Application

Evaluate liver for metastasis following cryosurgery

Author

Kuszyk B, Fishman EK

Reference Source

Radiology 2000 Nov;217(2)477-486

Scanner Used

Siemens Somatom Plus 4

Injection Rate

3cc/sec

Contrast Volume and Type

120-150cc of Omnipaque 350

Area Scanned

From dome of liver to just below the inferior border of the liver

Scan Delay

30sec / 60-70sec

Length of Spiral (time)

30-40sec

Slice Thickness

3mm for arterial phase 5mm for portal venous phase

Table Speed/Pitch

5mm/sec or a pitch of 1.6

Reconstruction Interval

3mm for arterial phase 5mm for portal venous phase

3D Technique Used

Volume rendering

Comment: The protocol is under investigation to see whether we can be more accurate in detecting tumor recurrence or response following cryosurgery.