一种用于癌症结果建模的方法,使用全面的合成数据集
Lorna Tu1,2, Hervé H F Choi3,4, Haley Clark5,4,6
1Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, Canada. lornatu@phas.ubc.ca.
Physical and engineering sciences in medicine
|July 24, 2025
概括
将合成患者数据与预后信息生成可以帮助预测癌症结果. 这种方法模仿真实数据,使强大的机器学习模型开发能够改善生存分析.
科学领域:
- 医疗信息学医学信息学
- 机器学习在瘤学中
- 放射学和临床数据整合.
背景情况:
- 患者数据有限阻碍了用于癌症预测结果的机器学习 (ML) 模型开发.
- 现有的合成图像生成方法往往缺乏关键的预后信息.
研究的目的:
- 开发一种癌症结果建模方法,使用一个全面的合成数据集,准确地模仿真实患者数据.
- 评估在合成数据上训练的ML模型的性能,以预测患者的存活率.
主要方法:
- 使用了132名非小细胞肺癌患者的真实数据集 (基于CT的放射性和临床特征).
- 使用条件表式生成对抗网络生成了一个合成数据集.
- 预测两年总生存期的模型使用各种特征选择方法和ML算法进行训练,然后在真实数据上进行测试.
主要成果:
- 真实和合成数据集显示出高度相似性 (连续特征的平均1-减去-KS统计值为0.871;离散特征的p<0.001).
- 使用随机森林重要性特征的XGBoost在两个数据集中表现一致 (平衡精度和AUC-PR的差异<1.3%).
结论:
- 合成放射和临床数据增强显示了癌症结果建模的潜力.
- 用更大,更多样化的数据集进行进一步验证对于超越肺癌的更广泛应用至关重要.
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