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Development and validation of a novel colonoscopy withdrawal time indicator based on YOLOv5

医学 结肠镜检查 四分位间距 外科 内科学 结直肠癌 癌症
作者
Jiaxin Li,Ziye Peng,Xiangyu Wang,Shuyi Zhang,Sun Jiayi,Yanru Li,Qi Zhang,Lei Shi,Hongzhou Li,Z. F. Tian,Yue Feng,Jinbao Mu,Na Tang,Ximo Wang,Wen Li,Zhengcun Pei
出处
期刊:Journal of Gastroenterology and Hepatology [Wiley]
标识
DOI:10.1111/jgh.16596
摘要

Abstract Background and Aim The study aims to introduce a novel indicator, effective withdrawal time (WTS), which measures the time spent actively searching for suspicious lesions during colonoscopy and to compare WTS and the conventional withdrawal time (WT). Methods Colonoscopy video data from 472 patients across two hospitals were retrospectively analyzed. WTS was computed through a combination of artificial intelligence (AI) and manual verification. The results obtained through WTS were compared with those generated by the AI system. Patients were categorized into four groups based on the presence of polyps and whether resections or biopsies were performed. Bland Altman plots were utilized to compare AI‐computed WTS with manually verified WTS. Scatterplots were used to illustrate WTS within the four groups, among different hospitals, and across various physicians. A parallel box plot was employed to depict the proportions of WTS relative to WT within each of the four groups. Results The study included 472 patients, with a median age of 55 years, and 57.8% were male. A significant correlation with manually verified WTS ( r = 0.918) was observed in AI‐computed WTS. Significant differences in WTS/WT among the four groups were revealed by the parallel box plot ( P < 0.001). The group with no detected polyps had the highest WTS/WT, with a median of 0.69 (interquartile range: 0.40, 0.97). WTS patterns were found to be varied between the two hospitals and among senior and junior physicians. Conclusions A promising alternative to traditional WT for quality control and training assessment in colonoscopy is offered by AI‐assisted computation of WTS.
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