深度学习模型用于从计算机断层扫描侦察图像中估计体重,其中包括性别和身高
Taichi Okabayashi1, Kei Terazaki2,3, Hajime Sagawa2
1Division of Clinical Radiology Service, Kyoto University Hospital, Kyoto, Japan. okabayashi.t07@gmail.com.
Radiological physics and technology
|February 25, 2026
概括
一个深度学习模型使用CT侦察图像,性别和身高来估计患者的体重. 这种人工智能工具有助于在计算机断层扫描 (CT) 中准确的对比剂剂量,当实际体重未知时.
科学领域:
- 放射学 放射学是一门学科.
- 人工智能的人工智能
- 医疗成像医学成像
背景情况:
- 精确的体重对于对比度增强计算机断层扫描 (CT) 剂量至关重要.
- 紧急医疗设置往往缺乏精确的患者体重测量,导致剂量错误.
- 在CT中估计重量的现有方法是有限的.
研究的目的:
- 开发和验证一种深度学习模型,用于从CT侦察图像中估计体重.
- 用各种输入组合 (侦察图像,性别,身高) 来评估模型的准确性.
- 评估模型在具有挑战性的患者群体中的表现 (例如,手臂与身体并排,金属植入物).
主要方法:
- 763名住院患者的回顾性分析,CT和体重数据相匹配.
- 使用VGG16架构的转移学习开发深度学习模型.
- 评估了四种输入组合:单独的侦察图像,性别,身高,以及性别和身高.
主要成果:
- 该模型实现了高准确度,92.8%的预测在实际重量±5公斤以内,当使用高度的侦察图像时.
- 平均绝对百分比误差在4.0%至4.8%之间,使用高度的侦察图像实现了最低的误差.
- 尽管患者的位置 (手臂与身体并排) 和金属植入物存在,但模型的准确性仍然很强.
结论:
- 从CT侦察图像中基于深度学习的体重估计是临床实践中可行的工具.
- 纳入患者的性别和身高显著提高了体重估计的准确性.
- 这种方法可以帮助优化对比剂剂量在计算机断层扫描,特别是在紧急情况下.
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