转变MRI成像上的定量DCE动力学歧视临床上显著的前列腺癌
Zhouping Wei1, Malinda Iluppangama1,2, Jin Qi3
1Department of Machine Learning, Moffitt Cancer Center, Tampa, FL, USA.
Cancer control : journal of the Moffitt Cancer Center
|November 15, 2024
概括
使用放射性转换量化动态对比增强 (DCE) 的MRI特征可以改善前列腺癌的检测. 这种方法增强了信号标准化和时间分析,以便更好地区分侵袭性疾病.
科学领域:
- 放射学 放射学是一门学科.
- 在瘤学瘤学.
- 医学成像分析 医学成像分析
背景情况:
- 动态对比增强 (DCE) 是前列腺癌检测的关键多参数MRI (mpMRI) 序列.
- 目前的DCE评估在很大程度上是定性性的,限制了其诊断潜力.
- 对DCE特征的定量分析可以改善前列腺癌的早期检测和表征.
研究的目的:
- 提出和验证DCEMRI分析前列腺癌的定量方法.
- 评估DCE图像上的放射性特征转换对疾病特征的有效性.
- 通过使用定量DCE指标来改善惰性和攻击性前列腺癌之间的歧视.
主要方法:
- 从转换的DCE (T1W) MRI序列中计算了306个放射性特征的6个依赖时间的指标.
- 对25名前列腺癌患者的应用方法,病理学格里森评分得到确认.
- 利用T2WMRI和整体病理学来指导异常区域的评估.
- 采用基于特征的转换 (例如,质量中心) 的后勤回归和用于分类器模型开发的SMOTE.
主要成果:
- 初步分析显示,在侵袭性和惰性疾病之间的时间DCE特征中存在显著差异 (P ≤0.05,q ≤0.01).
- 使用DCE特征的分类器模型在质量中心转换后实现了0.89-0.94.9的AUC.
- 使用平均特征转换的模型产生了0.71-0.76的AUC,通过引导式交叉验证和SMOTE进行验证.
结论:
- DCE MRI (T1序列) 的放射性转换提供了改进的信号标准化.
- 转变的DCE特征的时间特征增强了侵略性前列腺癌的歧视.
- 定量DCE分析有望改善前列腺癌的评估和管理.
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