Virtual colonoscopy using CT to visualise colon lumen
Expansion
CT Colonoscopy
Purpose
Alternative to optical colonoscopy for polyp detection
Clinical Context
CTC (virtual colonoscopy) detects polyps greater than or equal to 6 millimetres with sensitivity approximately 95 percent. Non-invasive but positive results require confirmatory colonoscopy.
Related Terms
- Colonoscopy
- Faecal immunochemical test
Key Points
- CTC is non-invasive but cannot biopsy or remove polyps; positive findings require colonoscopy