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A Web-Based Education Program for Colorectal Lesion Diagnosis with Narrow Band Imaging Classification
Digestion
|April 20, 2018
Summary
An online tutorial significantly improved colorectal lesion identification using narrow band imaging (NBI). Trainees achieved expert-level diagnostic accuracy after completing the NBI interpretation training.
Area of Science:
- Gastroenterology
- Medical Education
- Endoscopic Imaging
Background:
- Effective interpretation of narrow band imaging (NBI) requires extensive feature exposure.
- Limited access to expert-led didactic lectures in the U.S. hinders NBI training.
Purpose of the Study:
- To develop an online tutorial for colorectal lesion identification using NBI.
- To assess the tutorial's effectiveness in improving diagnostic performance.
Main Methods:
- A pretest-posttest design was used with 9 experts and 8 trainees interpreting 50 white light (WL) and 50 NBI colorectal lesion images.
- Trainees completed an online tutorial focused on NBI interpretation.
- Diagnostic yields were compared pre- and post-tutorial.
Main Results:
- Experts demonstrated higher diagnostic yields than trainees in NBI interpretation (sensitivity 91.5% vs. 89.6%).
- The online tutorial enhanced trainees' diagnostic yields to expert levels (sensitivity 94.1%, accuracy 92.0%).
- Post-tutorial, trainees showed substantial interobserver agreement (κ value 0.78), comparable to experts.
Conclusions:
- A concise online tutorial effectively improved diagnostic performance in NBI interpretation.
- The training enhanced diagnostic accuracy and interobserver agreement among trainees.
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