Chiari畸形的MR、CT诊断(附42例报告)  

MRI and CT Diagnosis of Chiari Malformation (Analysis of 42 Cases)

作　　者：刘希胜[1] 史良玉[1] 苗重昌[1] 

机构地区：[1]江苏省连云港市第一人民医院影像科,222002

出　　处：《现代医用影像学》1999年第4期169-171,共3页Modern Medical Imageology

摘　　要：目的：评价磁共振及CT对Chiari畸形的诊断价值。材料与方法：收集42例资料完整的Chiari畸形患者磁共振成像资料，其中21例做了头颅CT扫描，9例做了颈椎CT平扫。结果：I型35例，I型7肽1型的主要征象是小脑扁桃体下移，Ⅱ型的小脑扁桃体下移程度更为严重，可达颈2～3椎体水平椎管内，并伴有脑干、四脑室移位变形及脑积水等，常合并其它颅底发育异常。结论：MRI无骨伪影，高组织对比．可多方位扫描，便于测量，矢状位薄层扫描TI加权像即可满足诊断需要。MRI的应用使本病的诊断变得简单可靠。Purpose: To evaluate MRI and CT on the diagnosis of Chiari ma1formation. Meterials and Methods: 42 caes of Chiari malformation on MRI were collected. of 42 cases, 2l had head CT fi1ms and 9 had neck CT films. Results: type I 35, type n 7. the main sign of tapc I is the descent of tonsil of cerehcllum. In type ll, the descent of tonsil of cerebellum is serious and it aways companied with the dis[21acement and distortion of the braln stcm and the forth ventricle. Hydrocephalus and the other aplasias of the skul1 base can be seen as well. Conclusion: MRI is hyper-tissure contrast, mu1ti-axis scanning and no bone artifact. Measuring is very convenient. Longituinal tl1in-layer scanrling ls enough. The diagnosis is easicr and more dependable with MRI.

关 键 词：CT 诊断 NMR 成像 布-加综合征 

分 类 号：R657.340.4[医药卫生—外科学] R816.1[医药卫生—临床医学]