Ct is us- CT Protocols
Spiral CT Protocols

Liver

Suspected hepatoma

Specific Anatomic Region

Liver

Application

Suspected hepatoma

Author

Baron RL et al.

Reference Source

Radiology 1996; 199:505-511

Scanner Used

GE HiSpeed Advantage

Injection Rate

3-5ml/sec

Contrast Volume and Type

150ml of Optiray 320

Area Scanned

Entire liver

Scan Delay

Arterial phase (AP): 20secDelayed phase (DP): 60-70sec

Length of Spiral (time)

20-30sec each

Slice Thickness

7mm

Table Speed/Pitch

7mm/sec

Reconstruction Interval

7mm

3D Technique Used

None

Comment: If the scanner can only obtain a single spiral scan then the arterial-phase study should be chosen as this is the best phase for lesion detection. Some sites will also do non contrast studies although we typically do not find it necessary.