Usefulness and Educational Benefit of a Virtual Scale Endoscope in Measuring Colorectal Polyp Size.

IF 3 3区医学 Q2 GASTROENTEROLOGY & HEPATOLOGY

Digestion Pub Date : 2024-01-01 Epub Date: 2023-09-05 DOI:10.1159/000533326

Yudai Takehara, Ken Yamashita, Shin Morimoto, Fumiaki Tanino, Noriko Yamamoto, Yuki Kamigaichi, Hidenori Tanaka, Hidehiko Takigawa, Ryo Yuge, Yuji Urabe, Shiro Oka

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引用次数: 0

Abstract

Introduction: The virtual scale endoscope (VSE) is a newly introduced endoscope that helps endoscopists in measuring colorectal polyp size (CPS) during colonoscopy by displaying a virtual scale. This study aimed to determine the usefulness of the VSE for CPS measurement and the educational benefit of using VSE images to improve CPS estimation accuracy.

Methods: This study included 42 colorectal polyps in 26 patients treated at Hiroshima University Hospital. In study 1, CPS measured using a VSE before endoscopic mucosal resection was compared with CPS measured on resected specimens, and the agreement between the two measurement methods was evaluated via Bland-Altman analysis. In study 2, 14 endoscopists (5 beginners, 5 intermediates, and 4 experts) took a pre-test to determine the size of 42 polyps. After the pre-test, a lecture on CPS measurement using VSE images was given. One month later, the endoscopists took a post-test to compare CPS accuracy before and after the lecture.

Results: In study 1, Bland-Altman analysis revealed no fixed or proportional errors. The mean bias ±95% limits of agreement (±1.96 standard deviations) of the measurement error was -0.05 ± 0.21 mm, indicating that the agreement between two measurement methods was sufficient. In study 2, the accuracy of CPS measurement was significantly higher among beginners (59.5% vs. 26.7%, p < 0.01) and intermediates (65.2% vs. 44.3%, p < 0.05) in the post-test than in the pre-test.

Conclusion: The VSE accurately measures CPS before resection, and its images are useful teaching tools for beginner and intermediate endoscopists.

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虚拟比例内窥镜在测量结直肠息肉大小方面的实用性和教育意义。

简介虚拟刻度内窥镜（VSE）是一种新推出的内窥镜，可通过显示虚拟刻度帮助内镜医师在结肠镜检查过程中测量结直肠息肉大小（CPS）。本研究旨在确定 VSE 对 CPS 测量的实用性，以及使用 VSE 图像提高 CPS 估计准确性的教育益处：本研究包括广岛大学医院治疗的 26 名患者的 42 个大肠息肉。在研究 1 中，内镜粘膜切除前使用 VSE 测量的 CPS 与切除标本上测量的 CPS 进行了比较，并通过 Bland-Altman 分析评估了两种测量方法之间的一致性。在研究 2 中，14 名内镜医师（5 名初学者、5 名中级者和 4 名专家）参加了确定 42 个息肉大小的预测试。预测试结束后，进行了关于使用 VSE 图像测量 CPS 的讲座。一个月后，内镜医师进行了后测，以比较讲座前后的 CPS 准确性：在研究 1 中，Bland-Altman 分析显示没有固定误差或比例误差。测量误差的平均偏差±95%的一致性界限（±1.96个标准差）为-0.05±0.21毫米，表明两种测量方法之间的一致性是足够的。在研究 2 中，初学者（59.5% 对 26.7%，p <0.01）和中级者（65.2% 对 44.3%，p <0.05）在后测中的 CPS 测量准确度明显高于前测：VSE能准确测量切除前的CPS，其图像对初级和中级内镜医师来说是有用的教学工具。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Digestion 医学-胃肠肝病学

CiteScore

7.90

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： ''Digestion'' concentrates on clinical research reports: in addition to editorials and reviews, the journal features sections on Stomach/Esophagus, Bowel, Neuro-Gastroenterology, Liver/Bile, Pancreas, Metabolism/Nutrition and Gastrointestinal Oncology. Papers cover physiology in humans, metabolic studies and clinical work on the etiology, diagnosis, and therapy of human diseases. It is thus especially cut out for gastroenterologists employed in hospitals and outpatient units. Moreover, the journal''s coverage of studies on the metabolism and effects of therapeutic drugs carries considerable value for clinicians and investigators beyond the immediate field of gastroenterology.