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基于扩散加权成像的分化动脉炎和非动脉炎前部缺血性视觉神经病变

Charlotte Pietrock¹, Theresia Knoche², Sophia Meidinger²

¹Department of Neurology with Experimental Neurology, Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany. charlotte.pietrock@charite.de.

BMC medical imaging

|June 19, 2025

概括

扩散权重MRI (DWI-MRI) 可以帮助区分动脉炎与非动脉炎性缺血性视觉神经病变 (AION). 视神经的受限扩散在A-AION中更常见,ADC值明显较低.

科学领域:

神经学神经学
放射学放射学是一门学科.
眼科医生眼科眼科

背景情况:

缺血性视神经病变 (ION) 是导致视力丧失的主要原因.
区分动脉炎ION (A-ION) 和非动脉炎ION (NA-ION) 对于及时治疗至关重要.
扩散加权成像 (DWI) 是一种磁共振成像 (MRI) 技术,用于评估水分子扩散.

研究的目的:

评估DWI-MRI在区分A-ION和NA-ION的有效性.
为了比较A-ION和NA-ION患者的定性和定量DWI发现.

主要方法:

一项双中心的队列研究包括2014-2024年3T DWI-MRI扫描.
扫描是在AION开始后10天内进行的.
对视神经的受限扩散和明显扩散系数 (ADC) 值进行了分析.

主要成果:

与NA-ION (42.4%) 相比,A-ION (82.6%) 的受限扩散发生频率明显高.
定性DWI评估显示A-ION.的灵敏度为0.83和特异性为0.58.
在A-ION (448.0 × 10−6 mm2/s) 和NA-ION (671.5 × 10−6 mm2/s) 中,定量ADC值明显较低.

结论:

在DWI-MRI上受限视神经扩散在A-ION中更为普遍.
下视神经ADC值与A-ION相关.
需要进一步的前性研究来确认DWI在区分A-ION和NA-ION中的作用.

关键词:

扩散权重成像技术的使用.大细胞动脉炎的巨细胞动脉炎磁共振成像技术磁共振成像技术视觉神经病变是一种视觉神经病变.

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