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Interobserver agreement on landmark and flexure identification in colon capsule endoscopy
B Schelde-Olesen1,2, T Bjørsum-Meyer3,4, A Koulaouzidis3,5,6
1Department of Clinical Research, University of Southern Denmark, Odense, Denmark. benedicte.schelde-olesen@rsyd.dk.
Techniques in Coloproctology
|April 10, 2023
Summary
Interobserver agreement on identifying key landmarks in colon capsule endoscopy (CCE) was poor, highlighting a need for improved methods. Artificial intelligence may offer a solution for better landmark identification in CCE procedures.
Area of Science:
- Gastroenterology
- Medical Imaging
- Endoscopy
Background:
- Optical colonoscopy utilizes Scope Guide for localization support, a feature absent in colon capsule endoscopy (CCE).
- Landmark identification in CCE has not been previously studied for interobserver agreement.
Purpose of the Study:
- To investigate the interobserver agreement on landmark identification in colon capsule endoscopy (CCE).
Main Methods:
- An interobserver study compared landmark identification (ileocecal valve, hepatic flexure, splenic flexure, anus) in 20 CCE videos.
- Readers included an external contractor and three in-house CCE specialists.
- Videos were from the Danish colorectal cancer screening program, involving patients aged 50-74 with positive fecal immunochemical tests (FIT).
Main Results:
- Overall interobserver agreement for all landmarks was 51% (54% with adequate bowel preparation).
- Agreement varied significantly by landmark: ileocecal valve (72%), hepatic flexure (29%), splenic flexure (22%), and anus (83%).
- Agreement improved slightly with adequate bowel preparation for all landmarks.
Conclusions:
- Interobserver agreement on identifying four key landmarks in CCE is poor.
- Improved methods are necessary for accurate landmark identification in CCE.
- Artificial intelligence presents a potential solution for enhancing landmark identification in CCE.
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