儿童Moyamoya病的MRI和MRA表现  

Moyamoya Disease in Children: MRI and MRA in 6 Patients

作　　者：王霄英[1] 肖江喜[1] 蒋学祥[1] 周元春[1] 高玉洁[1] 

机构地区：[1]北京大学第一医院医学影像科,北京100034

出　　处：《中国医学影像技术》2001年第11期1038-1040,共3页Chinese Journal of Medical Imaging Technology

摘　　要：目的　分析 6例患儿 (年龄 10个月到 8岁 )的MRI和MRA表现。方法　MRA影像主要研究颈内动脉和大脑中动脉的狭窄以及侧支血管的出现情况 ,并由此进行分期 ;MRI影像主要研究脑梗塞的发生部位。结果　MRA表现为颈内动脉狭窄 2 5 % (3/ 12 ) ,大脑中动脉狭窄 91.7% (11/ 12 ) ,伴侧支血管形成 10 0 % (12 / 12 ) ,1个大脑半球血管表现为II期 ,6个为III期 ,3个为IV期 ,2个为V期。MRI表现以大脑半球皮质和 /或皮质下梗塞为主 ,达 75 %(9/ 12 ) ,33.3 % (4/ 12 )的大脑半球半卵圆中心脑白质出现梗塞 ,其中 2 5 % (3/ 12 )为两者合并出现的。结论　MRI和MRA是评价儿童Moyamoya病的一种很好的影像学方法。对于怀疑Moyamoya病的患儿应成为首选的影像学检查方法。Objective We retrospectively studied the MRI and MRA appearances of 6 children (10 months to 8 years) with Moyamoya disease. Methods MRI and MRA images were analyzed. For the MRA images, it was concerned that whether there were occlusive changes of the internal carotid artery and middle cerebral artery and whether there were collateral vessels. The MRA appearances were staged according to the Suzuki classification. For the MRI images, the locations of the infarct lesions were studied. Results For the MRA images, 25%(3/12) internal carotid arteries and 91.7%(11/12) middle cerebral arteries were observed stenosis, and collateral vessels were formed in 100%(12/12) cerebral hemispheres. According to Suzuki classification, one hemisphere was classified as stage Ⅱ, six as stage Ⅲ, three as stage Ⅳ, two as stage Ⅴ. MRI revealed cortical and/or subcortical infarctions in 75%(9/12) cerebral hemispheres, 33.3%(4/12) hemispheres exhibited deep white matter infarctions in the centrum semiovale, and 25%(3/12) of them existed simultaneously. Conclusion MRI and MRA was the method of choice in diagnosis and the follow up study of moyamoya disease. Combined MRI and MRA techniques were well suited as a first line diagnostic modality in children.

关 键 词：MOYAMOYA病 脑 磁共振成像 儿童 

分 类 号：R743[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]