Colonoscopy with a VideoEndoscope: preliminary experience.

A prototype VideoEndoscope was tested that does not have an optical fiber bundle. This was replaced by a sensing device in the instrument's distal tip that transmits an image to a video processor for display on a television monitor. The television image was excellent, and the instrument system and its concept in general were thought to be acceptable for diagnostic and therapeutic colonoscopy. The instrument has unique advantages with regard to documentation, demonstration, and review of endoscopic findings.