TITLE

IDENTIFICATION OF VILLOUS ATROPHY ON ZOOM ENDOSCOPY DIGITAL IMAGES

AUTHOR(S)
Badreldin, R.; Ramakrishnan, S.; Ellis, W.R.; Maklon, A.F.; Yiannakou, J.Y.
PUB. DATE
April 2003
SOURCE
Gut;Apr2003 Supplement 1, Vol. 52, pA111
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Introduction and Aims: The Olympus XQ240Z endoscope allows x100 magnification of the mucosal surface. Accurate detection of villous atrophy (VA) could allow all patients attending for endoscopy to be screened for coeliac disease. The aim of this study was to assess whether interpretation of zoom endoscopy images is an easily transferable skill. Methodology: Four endoscopists with either little or no experience of zoom endoscopy were asked to view 246 'zoom' images of duodenal mucosa to identify VA. The images where obtained by endoscopist RB who is experienced in zoom endoscopy (400 procedures), and who was aware of clinical details. Reasonable quality single images were selected, 227 of which were normal and 20 with VA. A further 20 images, 10 each showing normal villi and VA were selected for a brief 10 minute practice session before the exercise. Results: RB's sensitivity in identifying VA is 100% with a specificity of 99.1%. Results of the four endoscopists assessing images are shown in the Table. Conclusion: Zoom endoscopy is likely to be an effective method for detecting coeliac disease. These figures show that even with minil mai training, and under adverse conditions (ie single image), recognition of villous atrophy on zoom endoscopy is an easily transferable skill. A large scale study is under way to assess the efficacy of zoom endoscopy in screening for coeliac disease in patients attending for direct access endoscopy.
ACCESSION #
9748050

 

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