An endoscopic training model to improve accuracy of colonic polyp size measurement.

International Journal of Colorectal Disease
Chi-Yang ChangJaw-Town Lin

Abstract

Most studies of colonic polyps rely on visual estimation when regarding polyp size; however, the reliability of a visual estimate is questionable. Our study aims to develop a training model to improve the accuracy of size estimation of colonic polyps in vivo. Colon polyps were recorded on 160 video clips during colonoscopy. The size of each polyp was estimated by visual inspection and subsequently measured with a flexible linear measuring probe. The study included a pretest, an intervention, and a posttest. The pretest included 160 video clips, which comprised the visual-estimation portion of the study. The intervention was an educational model consisting of 30 video clips which included a visual-estimation section and a linear-measuring-probe section, designed to help the endoscopists to compare their visual estimate of size with the measured size of the polyps. The posttest included the 160 video clips used in the pretest, presented in random order. Intraobserver agreement and diagnostic accuracy were compared before and after the training session. Eight beginners and four experienced colonoscopists were enrolled. The overall kappa (kappa) values of intraobserver agreement for pretest and posttest were 0.74 and 0.85 for begin...Continue Reading

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Jun 8, 2012·Colorectal Disease : the Official Journal of the Association of Coloproctology of Great Britain and Ireland·C A RubioJ G Jonasson
Oct 15, 2013·Gastrointestinal Endoscopy·Douglas K Rex, Raphael Rabinovitz
Apr 15, 2015·International Journal of Colorectal Disease·Tatsuyuki WatanabeMasaru Harada
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Jan 30, 2020·Digestive Endoscopy : Official Journal of the Japan Gastroenterological Endoscopy Society·Takahiro UtsumiHiroshi Seno
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Feb 19, 2021·Journal of Gastroenterology and Hepatology·Takahiro UtsumiHiroshi Seno

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