The impact of three-dimensional imaging on polyp detection during colonoscopy: a proof of concept study

Message Failures in lesion detection at colonoscopy deliver imperfect protection against colorectal cancer. Minimally elevated lesions are more likely to contain high-grade dysplasia or invasive carcinoma, but are frequently undetected during conventional two-dimensional (2D) colonoscopy. We performed a randomised, complete, across-subjects counterbalanced study of 3D versus 2D imaging for lesion detection during simulated colonoscopy in a simulation laboratory. Thirty-six gastroenterology fellows, comprising 50% of the nationwide pool in Australia, were tested on their ability to detect a 1 mm lesion that was similar in colour and surface texture to its surroundings in 20 simulated colonoscopy withdrawal videos, half of which contained a lesion and the other half were lesion-free. Testing difficulty was maximised to accommodate for ceiling effects, and experimental validity was confirmed by pilot testing using international experts in colonoscopy. We found a 25.1% absolute improvement in detection rates for 3D over 2D imaging. The sensitivity of 3D...
Source: Gut - Category: Gastroenterology Authors: Tags: Endoscopy, Colon cancer Endoscopy news Source Type: research