在未修剪的超声波视频中对腹部病理的自动诊断
Güinther Saibro1,2,3, Yvonne Keeza2, Benoît Sauer4
1Ircad Africa, Kigali, Rwanda.
概括
这项研究引入了一种使用诊断相关视频剪辑 (DR-Clips) 的超声波计算机辅助诊断 (CAD) 的新方法. DR-Clips显著提高了视频分类器对脏和肝脏病理的概括性能.
科学领域:
- 医疗成像医学成像
- 人工智能的人工智能
- 计算机辅助诊断 计算机辅助诊断
背景情况:
- 标记训练数据是计算机辅助诊断 (CAD) 系统临床转化的主要障碍.
- 最先进的视频分类器 (SOTA) 很难将基于超声波视频的CAD泛化,特别是在病理方面.
研究的目的:
- 为了克服超声视频为基础的CAD中的数据标签障碍.
- 提高使用视频级标签的SOTA视频分类器的概括性能.
主要方法:
- 一个新的培训策略,使用框架相关性评估器来识别诊断相关的视频剪辑 (DR-Clips).
- 使用DR-Clips引导视频旋转变压器进行训练,并推断肝脏和脏病理超声波视频.
主要成果:
- 通过使用带有视频旋转变压器的DR-Clips来检测病理的0.92 ROC-AUC,比标准剪辑 (0.72 ROC-AUC) 显著改善.
- 视频Swin变压器和其他分类器超过0.92的ROC-AUC,用于检测肝硬化症.
结论:
- 视频标签为超声波CAD提供比图像标签更弱的监督,影响了概括.
- 通过提供级指导,DR-Clips显著提高了性能.
- 突出了医疗成像视频分类器中的框架指导改进的局限性和机会.
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