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.
14MR矢状位像均
示斜坡向颅内陷入,3
见齿状突后移,1
寰枕融
畸形,14
均清晰地
示了延颈髓的形态及与小
体的关系。