Specific Anatomic RegionLiver
ApplicationR/O metastasis, tumor
AuthorElliot K. Fishman, MD
Reference SourcePersonal communication
Scanner UsedSensation 16
KV / Effective mAs / Rotation time (sec)120 kV/ 225 eff. mAs / 0.5 sec
Detector Collimation (mm)  0.75 mm or 1.5 mm
Slice Thickness (mm)  0.75 mm or 2 mm
Feed / Rotation (mm)  12.0 mm or 24.0 mm
Kernel  B30f medium smooth
Increment (mm)0.75 mm x 0.5 mm (3D) 5 mm x 5mm (filming)
Image Ordercraniocaudal
Oral Contrastwater (1000 cc)
IV Contrast Volume and Type120 cc Omnipaque 350
Injection Rate3.0-4 cc/sec
Scan Delay (sec)Arterial: 25-30 sec Venous: 50-60 sec delay
3D Technique UsedVRT and MIP  
Comment: -In case of cirrhosis and suspected hepatoma, or in any case with suspected HCC, or with a tumor that has vascular metaseases (ie islet cell tumor) dual phase imaging is done. In cases where the metastases are hypovascular (ie colon cancer) then a single phase image is enough just for lesion detection.