Virtual colonoscopy (CT Colonography) – Is it ready for prime time?
Virtual colonoscopy includes CT Colonography (CTC) and MR (magnetic resonance) colonography. MR colonography is very much in the developmental phase and is not available in Australia and therefore, will not be discussed here.
Technique: CTC involves
a) bowel cleansing,
b) air or CO2 insufflation of the co- lon,
c) CT scanning and
d) image processing and interpretation.