Radiology:胶质母细胞瘤MRI放射组学亚型对预测生存期的价值

2019-02-13 shaosai MedSci原创

本研究旨在探究MRI放射组学征象联合临床和基因指标在提高多形性胶质母细胞瘤(GBM)生存期的价值。

本研究旨在探究MRI放射组学征象联合临床和基因指标在提高多形性胶质母细胞瘤(GBM)生存期的价值。

本研究纳入诊断为GBM的患者并分为训练组和测试组(比例3:1)。分析多参数MRI并提取放射组学特征(n=796)。利用随机生存森林(RSF)模型分析放射组学特征及临床和基因型指标。利用O-6-甲基鸟嘌呤-DNA-甲基转移酶启动子甲基化和异柠檬酸脱氢酶-1突变1分钟后状态预测整体生存期(OS)和无进展生汛期(PFS)。利用测试组对RSF模型进行验证。利用整合ROC曲线下面积(iAUC)评价放射组学特征增值。

结果为,本研究共纳入了217例患者。中位数OS和PFS分别为352天(范围20-1809天)和264天(范围21-1809天)。RSF放射组学模型在测试组成功验证(OS: iAUC, 0.652 ,95%CI, 0.524, 0.769] , PFS:0.590 [95% CI: 0.502, 0.689])。与仅包含临床和基因学指标模型相比,放射组学模型提高了生存期预测能力(OS和PFS分别为P = .04、 .03)。

本研究表明,放射组学MRI亚型能够联合临床和基因学指标提高生存期预测,因此有可能作为有用的影像学标记。

原始出处:

Bae S, Choi YS, Ahn SS,et al.Radiomic MRI Phenotyping of Glioblastoma: Improving Survival Prediction.Radiology.DOI:10.1148/radiol.2018180200

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