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在791名参与者参与的一项人口研究中,异常性正常压力脑症的MRI标志物:探索参考值和关联

Clara Constantinescu¹, Doerthe Ziegelitz², Carsten Wikkelsø¹

¹Hydrocephalus Research Unit, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Sweden.

The neuroradiology journal

|December 9, 2024

概括

这项研究建立了基于人群的基准值,用于异常性正常压力脑水性 (iNPH) 成像标志物. 它表明z-EI和BVR在评估iNPH患者心室扩大方面优越.

科学领域:

神经学神经学
放射学放射学是一门学科.
流行病学流行病学

背景情况:

异常性正常压力脑症 (iNPH) 诊断依赖于成像标记,但基于人口的参考值很少.
了解正常的成像标记值对于准确的iNPH诊断和管理至关重要.

研究的目的:

在大量人口样本中分析形态和体积iNPH成像标记.
为了确定这些标记物的分布,诊断准确度和建议的切断值.
调查成像标记物与iNPH症状之间的关联.

主要方法:

一项对791名70岁以上的个体进行的横截面研究,其中40名具有放射性可能的iNPH (iNPH_Radiol) 和751名对照.
磁力共振成像测量包括埃文斯指数 (EI),z-EI,脑对心室比率 (BVR,BVR,PC) 和体积评估.
用接收器操作特征 (ROC) 分析来确定成像标记器切线.

主要成果:

在参考组中,中位数EI为0.27,z-EI为0.28.
大多数成像标记在iNPH_Radiol和对照组之间有显著差异.
确定了最佳的截止值:z-EI (0.32),BVR_AC (1.36),以及BVR_PC (1.83).
侧心室体积与z-EI和BVR的相关性比EI更好.
临床症状与成像标志物 (Rs < 0.49) 有中度相关性.

结论:

为iNPH成像标记器提供基于人口的参考值和切断值.
在评估iNPH中心室扩大时,Z-EI和BVR似乎优于EI.
图像标记显示出与iNPH症状的中等相关性.

关键词:

异常性正常压力水脑.具有歧视性的权力.图像成像生物标志物生物标志物磁共振成像技术的使用

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