多层螺旋CT面神经管曲面重建和解剖对照研究.pdfVIP

多层螺旋CT面神经管曲面重建与解剖对照研究 1 1 1 1 2 宋光义 韩丹 刘俊华 廖承德 江超武 1.云南昆明医学院第一附属医院影像中心CT室 2.耳鼻喉科 650032 摘要 目的 探讨面神经管曲面重建研究面神经管解剖的可靠性 方法 20具(40侧颞骨)成人尸头标本行高分辨CT扫描 及面神经管轴位 冠状位和矢状位曲面重建并测量各段长度 直径和两个弯曲的角度 观察重建图像上面神经管各段的走 行及有无变异 对40侧颞骨标本的面神经管进行解剖 观察面神经管有无变异 并测量各段长度 直径和两个弯曲角度 结果 重建图像均可准确测得各段长度 直径及锥曲角度 冠状位和矢状位能准确测量膝状神经节角度 与解剖测量结 果一致 P﹥0.05 面神经管缺裂发生率 35﹪ 1440 膝状神经节骨管缺裂 5侧 水平段7侧 垂直段2侧 走行 异常15侧 分叉畸形2侧 局部膨大3侧 三个位置的CPR图像均可准确显示并测量水平段 垂直段骨质缺裂和局部膨 大 轴位与冠状位CPR重建图像对膝状神经节处的骨质缺损显示好 但冠状位重建图像有假阳性 能直观 准确显示有成 角的走行变异 结论 面神经管高分辨力CT图像的CPR为研究面神经管影像解剖良好的 可靠的方法 可代替解剖测量与 观察 关键词 面神经管 解剖 体层摄影术 线计算机X 曲面重建 Study of comparing the anatomy with curved planar reformatted CT of the facial nerve canal 1 1 1 1 2 SONG Guang-yi , HAN Dan , LIU Jun-hua , LIAO Cheng-de , JIANG Chao-wu (1.Department of Imaging, 2.Department of Otorhinolaryngology, the first affiliated hospital of kunming medical college, Kunming, 650032, China) Abstract: Objective To study the reliability of curved planar reformatted(CPR) CT of the facial nerve canal. Methods 20 adult head cadavers with 40 sides tempotal bone were examined by CT and curved planar reformatted,then were anatomized.the length,diameter and the two angles were measured both on the image of CPR and cadavers,as well as the course and aberrance of the facial nerve canal were investigated. Results the images of CPR could accurately measure the length,diameter and the angles of the second geniculation,and the sagittal, coronary of CPR could accurately measure the angles of the first geniculation,as well as did the anatomy(P ﹥0.05); Prevalence of dehiscent facial nerve canal was 32.5%,while 5,6,2incidence facial nerve