Resluts All the 14 cases showed clivus projecting intracranial.posterior displacement of Odontoid Process were found in 3 cases,with 1 case of Atlanto-occipita fusion malformation.
结果:14MR矢状位像均显示斜坡向颅内陷入,3
见齿状突后移,1
寰枕融
畸
,14
均
晰地显示了延颈髓
及与小脑扁桃体
关系。