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Updated: Jul 14, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
Published on: July 11, 2025
Virtual colonoscopy: technique and accuracy
Luis A Landeras1, Rizwan Aslam, Judy Yee
1Department of Radiology, University of California in San Francisco, 505 Parnassus Ave., San Francisco, CA 94143, USA. luis.landeras@va.gov
Abstract:
Virtual colonoscopy (VC) has acquired an important role in evaluation of the colon. In some situations it may be a safer method to visualize the colon effectively, or it may be the only available option when other techniques have failed. This article reviews state-of-the art VC technique and the results of current performance trials. It discusses the rationale for using various colonic cleansing regimens for VC. It also discusses the two distending agents for VC (room air and carbon dioxide) and presents practical tips for administration and the role of antispasmodic drugs.
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