脊索瘤来源于脊索的胚胎残余[1]，是一种比较少见的颅底肿瘤。文献中报道占颅内肿瘤的0.1—0.67％[2]，CT对此病的报道尚不多，作者收集经CT扫描并由手术病理证实的18例。现将其CT征象分析介绍，以期能提高颅内脊索瘤的诊断水平。1材料和方法本组男10例女8例年龄在27岁一78岁； Chordoma derived from the chordal embryo remnant [1], is a relatively rare skull base tumor. Reported in the literature accounted for 0.1-0.67% of intracranial tumors [2], CT is not yet reported on the disease, the authors collected by CT scanning and confirmed by surgical pathology in 18 cases. Now CT signs analysis introduced in order to improve the diagnosis of intracranial chordoma. 1 Materials and Methods The group of 10 males and 8 females were 27 years old and 78 years old;