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Updated: Jul 11, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
Published on: July 11, 2025
CT colonography: an update
Andrik J Aschoff1, Andrea S Ernst, Hans-Juergen Brambs
1Diagnostic and Interventional Radiology, University Hospitals of Ulm, Steinhoevelstr. 9, 89070, Ulm, Germany. andrik.aschoff@uni-ulm.de
Abstract:
Computed tomographic (CT) colonography (CTC)--also known as "virtual colonoscopy"--was first described more than a decade ago. As advancements in scanner technology and three-dimensional (3D) postprocessing helped develop this method to mature into a potential option in screening for colorectal cancer, the fundamentals of the examination remained the same. It is a minimally invasive, CT-based procedure that simulates conventional colonoscopy using 2D and 3D computerized reconstructions. The primary aim of CTC is the detection of colorectal polyps and carcinomas. However, studies reveal a wide performance variety in regard to polyp detection, especially for smaller polyps. This article reviews the available literature, discusses established indications as well as open issues and highlights potential future developments of CTC.
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