Protocols: Siemens Protocols

64 Slice MDCT Protocol

KV/Effective mAs/ Rotation time (sec) 120 / 50 / 0.5
Detector Collimation (mm) 0.6
Slice thickness (mm) for 3D 1mm (thins)
Slice thickness for extracolonic 3mm (thicks)

B20f smooth abdomen window (thin)

B30f medium smooth abdomen (thick)

Reconstruction interval

0.8mm (thin)

3.0mm (thick)

Image order (acquisition) Cranial- Caudal
Respiration Expiration
Positions supine, prone, left lateral rectum
Contrast CO2  insufflation of the colon
IV contrast  none
3D technique used 2D and 3D review