枕颈部疾病由于靠近延髓,与椎动脉关系密切,手术难度及风险都很大,在枕颈交界处的病变中常常合并有骨性结构及血管的变异情况,因此术前应对局部的解剖结构有详细的了解及判断,从而减少并发症及副损伤。多层螺旋CT具有扫描速度快、扫描层薄、图像分辨率高、各项同性等技术优势, Occipital neck disease as close to the medulla oblongata, and the vertebral artery is closely related to the difficulty and risk of surgery are very large, in the junction of the occipital and cervical lesions often associated with skeletal structure and vascular variation, preoperative local anatomy Have a detailed understanding and judgment, thus reducing the complications and side effects. Multi-slice spiral CT has the advantages of fast scanning speed, thin scanning layer, high image resolution and the same isotropy and other technical advantages,