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扩散核磁共振 (MRI) 在脑干质瘤基因型鉴定中具有价值,可以通过对白质道进行定量测量

Xiong Xiao¹, Ne Yang², Guocan Gu¹

¹Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, 119#, Nan Si Huan Xi Lu, Fengtai District, Beijing, 100070, China.

European radiology

|November 5, 2023

概括

扩散MRI (dMRI) 通过预测H3K27M突变,有效地确定脑干质瘤 (BSG) 的基因型. 白质管道测量显著提高dMRI模型的性能,用于非侵入性BSG基因型检测.

科学领域:

神经成像是一种神经成像.
在瘤学瘤学.
放射学放射学是一门学科.

背景情况:

脑干质瘤 (BSG) 是一种侵袭性的儿科瘤.
准确的H3K27M突变基因定型对于BSG诊断和治疗至关重要.
目前的基因型定型方法可能具有侵入性.

研究的目的:

评估扩散MRI (dMRI) 对H3K27M在BSG中的基因定型的实用性.
开发和验证基于dMRI的模型,用于非侵入性BSG基因型预测.

主要方法:

一个BSG患者的初级队列接受了dMRI (b=0,1000,2000秒/mm2).
计算了扩散张力和曲解成像 (DTI/DKI) 度量,提取了组图特征和白质 (WM) 管道测量.
多变量逻辑回归和ROC分析被用来构建和测试dMRI衍生的基因型化模型,并将临床变量纳入名图.

主要成果:

纳入瘤组图特征和WM通道测量的dMRI模型实现了高诊断性能 (AUC=0.9311).
通过WM管道测量,显著提高了基因型准确性 (p < 0.05).
结合最好的dMRI模型和临床数据的nomogram在初级 (AUC=0.9321) 和验证 (AUC=0.8951) 队列中表现出强的表现.

结论:

在BSG中,dMRI是用于非侵入性H3K27M基因型鉴定的一个有价值的工具.
在提高基于dMRI的BSG基因定型准确性方面,WM通道测量特别有效.
综合的dMRI和临床数据模型可以帮助BSG患者的临床决策.

关键词:

大脑干的新生体大脑干瘤.扩散磁共振成像技术的研究.质瘤是一种质瘤.突变突变是一种突变.白质是白质的组成部分.

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