Sun Jie, Zhang Hua, Gong Ruozhen, Wang Haibo
Department of Otolaryngology, First Affiliated Hospital of Xinjiang Medical University, Urumchi, 830054, China.
Lin Chuang Er Bi Yan Hou Ke Za Zhi. 2006 Aug;20(16):732-4.
To explore the clinical application of CT virtual endoscopy (CTVE) of ossicular chain in middle ear, and to establish the accurate method of observing ossicular chain and middle ear anatomy.
Volume scanning with spiral CT unit was performed in forty normal cases without illness of ear. Endoscopic 3D processing was carried out on a separate workstation equipped with a flying through program. From three isolated points(A, B and C), ear drum and ossicles were observed with CTVE method. The status of auditory ossicles connection were focused.
In CTVE via A, B and C points, the indication rates of the malleus, the indus, the drum cape, the canalis facialis horizontal section, and the prominence of horizontal semicircular canals were prosperously 100%. The indication rates of round window and the fenestra ovalis were 90%, 93%, 98% via A, B and C points respectively. And the indication rates of complete demonstration of ear ossicles were 100%, 95%, 93%, respectively.
With appropriate approach, CTVE has advantage of showing ear ossicles and their connections, which is a good supplement of routine CT.
探讨中耳听骨链CT仿真内窥镜（CTVE）的临床应用，建立观察听骨链及中耳解剖结构的准确方法。
对40例无耳部疾病的正常受试者行螺旋CT容积扫描，在配备容积漫游程序的独立工作站上进行内窥镜三维处理，从三个孤立点（A、B、C）用CTVE方法观察鼓膜及听小骨，重点观察听小骨的连接情况。
经A、B、C点的CTVE观察，锤骨、砧骨、鼓岬、面神经水平段、水平半规管隆突的显示率均为100%；圆窗、卵圆窗经A、B、C点的显示率分别为90%、93%、98%；听小骨完整显示率分别为100%、95%、93%。
采用合适的方法，CTVE在显示听小骨及其连接关系方面具有优势，是常规CT的良好补充。
