基于放射学可解释的人工智能,预测肺部立体体辐射疗法后的治疗反应
Savino Cilla1, Carmela Romano1, Gabriella Macchia2
1Medical Physics Unit, Responsible Research Hospital, Campobasso 86100, Italy.
The British journal of radiology
|October 10, 2025
概括
这项研究开发了一种可解释的放射学模型,以预测肺转移对立体体辐射疗法 (SBRT) 的反应. 该模型准确评估治疗结果,帮助个性化SBRT策略.
科学领域:
- 放射学和医学成像技术
- 辐射瘤学 辐射瘤学
- 计算生物学 计算生物学
背景情况:
- 对肺转移的治疗反应评估对于指导治疗至关重要.
- 立体体辐射疗法 (SBRT) 是肺转移的一个关键方式.
- 预测模型可以优化SBRT疗效和患者的治疗结果.
研究的目的:
- 开发和验证基于CT的放射性临床剂量计模型,用于评估对SBRT的肺转移反应.
- 整合机器学习 (XGBoost) 和可解释性技术 (SHAP) 进行可靠的预测.
- 为临床医生提供一种可理解的工具,用于个性化SBRT战略开发.
主要方法:
- 用SBRT治疗的80个肺转移的分析,按固体瘤响应评估标准 (RECIST) 分类.
- 从计划CT图像中提取107个放射性特征,并使用LASSO进行特征选择.
- 训练和验证一个极端梯度增强 (XGBoost) 模型,使用SHAP分析进行解释性.
主要成果:
- 采用8个放射性特征和1个剂量计变量 (生物等效剂量BED10) 的XGBoost模型,实现了高预测精度 (培训和验证队列中的AUC为0.897和0.864).
- 关键预测因素包括斜度,面积比,球形度和BED10.
- SHAP分析提供了对特征重要性和模型预测的明确见解.
结论:
- 开发的可解释放射学模型有效地预测了用SBRT治疗的肺转移的完整反应 (CR).
- 这个模型可以帮助临床医生通过更好的理解来个性化SBRT策略.
- 提出的方法为肺转移管理的临床实践提供了指导.
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