在磁共振成像放射学临床参考的变化和不确定性的计算分析:建模和性能
Cindy Xue1,2, Jing Yuan1, Gladys G Lo3
1Research Department, Hong Kong Sanatorium and Hospital, Hong Kong, China.
Visual computing for industry, biomedicine, and art
|November 18, 2024
概括
临床参考不确定性显著影响磁共振成像 (MRI) 放射学. 临床参考资料的高准确性对于开发可靠的放射性模型和确保前列腺癌分析的强大性能至关重要.
科学领域:
- 无线电学 (Radiomics) 是一种辐射学.
- 计算成像技术的成像
- 前列腺癌研究 研究前列腺癌
背景情况:
- 磁共振成像 (MRI) 放射学为前列腺癌提供了宝贵的见解.
- 临床参考准确性对于可靠的放射性模型开发至关重要.
- 临床参考不确定性对放射学学的影响尚未完全理解.
研究的目的:
- 以计算方式研究临床参考不确定性如何影响MRI放射学特征选择,模型构建和性能.
- 量化改变格里森分数引用对放射性分析的影响.
主要方法:
- 利用了两个公开的前列腺癌MRI放射学数据集 (n=260,n=100).
- 在20次重复训练中,在不同级别的训练集中 (5%的增量) 进行了临床参考.
- 采用了四个特征选择算法,两个分类器,交叉验证和一个保留测试集.
- 使用Jaccard相似度评估特征选择,使用曲线下的面积 (AUC) 和准确度评估模型性能.
主要成果:
- 随着临床参考变换,特征选择的一致性大幅下降.
- 与未经转换的数据 (数据集1 AUC 0.94,数据集2 AUC 0.97) 相比,模型AUC在参考合 (例如,≥20%的合:数据集1 AUC 0.67,数据集2 AUC 0.74) 中显著下降.
- 模型性能显示,随着更高水平的参考变换,不确定性和退化增加.
结论:
- 临床参考不确定性显著影响MRI放射性特征选择和模型性能.
- 临床参考资料的高精度对于构建可靠和强大的放射性模型至关重要.
- 需要仔细解释放射性模型的性能,特别是在高维数据和潜在的参考不确定性方面.
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