ChiariI型畸形的磁共振诊断

MRI Diagnosis of ChiariⅠ Malformation

作者报告１７例ＣｈｉａｒｉＩ型畸形，全部行头颈部矢状及横轴位扫描，其中５３％（９／１７）伴有脊髓空洞症。５３％（９／１７）伴发颅颈交界处骨发育异常。８例发现身体其它部位先天发育畸形。头颈部矢状Ｔ１加权像能清楚地显示小脑扁桃体疝、脊髓空洞症及合并的颅颈交界处骨发育异常。探讨其发病机制及诊断标准。

7 cases of Chiari Ⅰ type malformation are reported.A sagittal multisectionand axial multisection of head neck were performed in all cases.53%( 9 /17)patients with syringohydromyelia. 53%(9 /17)were associated with bone anomal- ies of craniovertebral junction, The congenital and developmental anomaliesof others parts were founded in 8 cases. T1 weighted imaging of head and neckin sagittal can demonstrate optimally cerebellar tonsil herniation, syringohy- dromyelia, and bone anomalies of craniovertebral junction. The mechanism and diagnostic standard of this disease are discussed.