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Published on: October 16, 2013
Multi-modal endoscopic artificial intelligence system improving classification of colorectal subepithelial lesions: a
Shurong Chen1, Louzhe Xu2, Yihong Zhang1
1Department of Gastroenterology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
Background:
Colorectal subepithelial lesions (SELs) present with similar endoscopic appearance but diverse in histology and prognosis, making precise diagnosis crucial but challenging.
Aim:
This study aims to develop a multi-modal endoscopic artificial intelligence (AI) system to facilitate colorectal SELs classification.
Methods:
Patients with histologically confirmed colorectal SELs were retrospectively enrolled from 7 hospitals. Single-modal models [Model W (WLE), Model E (EUS)] and multi-modal AI system, AIOSCOPE-WE, were constructed. The classification performance was evaluated both internally and externally. Endoscopists' performance with and without AIOSCOPE-WE support was compared.
Results:
510 patients (364 neuroendocrine tumors (NETs), 72 lipomas, 23 leiomyomas and 51 inflammatory hyperplasia) with 5118 WLE images and 4950 EUS images were included. In classifying colorectal SELs, AIOSCOPE-WE achieved higher accuracy than EUS experts and non-experts (86.0 % vs 75.8 % and 65.4 %, P < 0.01). With AI support, endoscopists' performance was improved from 70.6 % to 83.1 % (P < 0.001). AIOSCOPE-WE also significantly outperformed Model W and Model E in accuracy in both internal (92.1 % vs 71.9 % and 78.6 %, P < 0.001) and external tests (84.9 % vs 69.4 % and 63.9 %, P < 0.001), with consistent performance across lesion sizes and NET grades.
Conclusion:
AIOSCOPE-WE holds great promise as a potent tool for endoscopists in classifying colorectal SELs and optimizing clinical decisions.
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