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目的分析血管周围间隙扩大的MRI影像特点。方法回顾性分析37例临床确诊的血管周围间隙扩大病例的MRI资料,包括病灶的大小、位置、数量、病灶占位效应、脑积水、相邻脑白质变化以及强化情况。结果 37例中,32例MRI表现为多发不同大小的圆形、类圆形病灶,5例表现为单发圆形、椭圆形病灶。病灶均为T1WI低信号、T2WI高信号,未见强化征象。病灶大小2~25mm。16例位于基底节区,11例位于半卵圆中心,4例位于中脑,3例位于丘脑,3例位于小脑齿状核。2例位于中脑的病灶并发脑积水,进行介入治疗。结论血管周围间隙扩大的MRI表现有一定的特征,具有重要的诊断价值。
Objective To analyze the features of MRI images with the enlargement of the perivascular space. Methods Retrospective analysis of MRI data of 37 cases of clinically diagnosed cases of enlarging perivascular space, including lesion size, location, quantity, lesion occupancy, hydrocephalus, adjacent white matter changes and enhancement. Results Of the 37 cases, 32 cases showed multiple round and round lesions with different sizes and 5 cases showed single round and oval lesions. Lesions were low signal T1WI, T2WI high signal, no signs of enhancement. Lesion size 2 ~ 25mm. Sixteen cases were located in the basal ganglia, 11 in the semi-oval center, 4 in the midbrain, 3 in the thalamus, and 3 in the cerebellar dentate gyrus. Two cases were located in the brain lesions associated with hydrocephalus for interventional therapy. Conclusion The MRI findings of the enlargement of the perivascular space have certain characteristics and have important diagnostic value.