对识别深入入侵性结直肠癌感兴趣的区域的差异:计算机辅助诊断与专家内镜医生
Yuki Nakajima1, Daiki Nemoto2, Zhe Guo3
1Department of Gastroenterology, Aizu Medical Center, Fukushima Medical University, Aizuwakamatsu, Japan.
Endoscopy international open
|November 11, 2024
概括
针对深层下膜入侵性结直肠癌的计算机辅助诊断 (CAD) 显示出出色的性能. 优化兴趣区域 (ROI) 标注是提高CAD的关键.
科学领域:
- 胃肠病学 胃肠病学
- 医疗成像医学成像
- 人工智能在医学中的应用
背景情况:
- 计算机辅助诊断 (CAD) 系统在检测深部下侵袭性结直肠癌 (T1b) 方面表现出高准确性.
- 识别CAD系统使用的精确"感兴趣区域" (ROI) 可能是具有挑战性的.
- 类激活映射 (CAM) 提供了一种可视化和理解CAD使用的ROI的方法.
研究的目的:
- 通过CAD系统识别的感兴趣区域 (ROI) 与专家内镜师为T1b结直肠癌划分的区域进行定量比较.
- 通过交叉与联合 (IoU) 分析,评估CAD识别的和内镜师识别的ROI之间的一致性.
- 为了确定ROI一致性是否与T1b结直肠癌检测的诊断准确性相关.
主要方法:
- 使用了82个经组织学确认的T1b结直肠癌内镜图像的数据集.
- 应用CAM从微调的ResNet50模型生成ROI可视化,每个病变一个图像.
- 两名专家内镜师在相同的图像上手动识别了ROI,随后进行了IOU分析以评估一致性.
主要成果:
- 与内镜师相比,CAD系统发现的ROI显著较小 (165K与300K像素;P<0.0001).
- 在CAD和内镜师ROI之间的IOU中位数为0.198.
- 正确诊断的病变 (0.213) 的IOU显著高于错误诊断的病变 (0.070;P = 0.033).
结论:
- 在正确诊断的T1b结肠直肠癌中观察到CAD和内镜ROI之间的更高一致性 (IoU).
- 最佳的注释和ROI的精确定义对于改善T1b结肠直肠癌CAD系统的诊断灵敏度至关重要.
- 对ROI提炼的进一步研究可能会提高CAD在结直肠癌查和诊断中的临床实用性.
更多相关视频
06:28E-Patient Counseling Trial E-PACO: Computer Based Education versus Nurse Counseling for Patients to Prepare for Colonoscopy
Published on: August 1, 2019
8.3K
09:42Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation
Published on: August 26, 2014
18.6K
相关概念视频
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
51
This lesson explores three gastrointestinal imaging techniques: radionuclide testing, colonic transit studies, and virtual colonoscopy.
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and...
Radionuclide Testing
Radionuclide testing is a sophisticated medical technique for assessing gastrointestinal motility. It focuses on gastric emptying and colonic transit time. Radioactive markers track the movement of food through the digestive system, providing insights into gastrointestinal disorders.
In gastric emptying studies, a meal's liquid and...
51
Endoscopic Procedures II: Colonoscopy
57
The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
57
