正常中耳腔的CT仿真内窥镜技术  

Application of CT virtual endoscopy(CTVE) on the normal middle ear

作　　者：陈合新[1] 许庚[2] 虞春堂[3] 史剑波[2] 吕剑霆[4] 王涛[4] 

机构地区：[1]第一军医大学附属南方医院耳鼻咽喉科,广州510515 [2]中山大学耳鼻咽喉科研究所,广州510080 [3]第一军医大学珠江医院影像中心,广州510282 [4]中山大学附属第三医院耳鼻咽喉科,广州510630

出　　处：《中国临床解剖学杂志》2004年第3期261-262,265,共3页Chinese Journal of Clinical Anatomy

摘　　要：目的:探讨正常听骨链的CT仿真内窥镜(CTVE)成像技术方法及其对中耳结构显示程度.方法:15例无中耳疾病的健康人,层厚1mm、螺距1.0轴位薄层扫描,骨算法、0.1～0.2mm间隔重建,行CTVE成像,观察正常听骨链的情况.结果:采用CTVE技术,对锤骨、砧骨及锤砧关节及砧镫关节的显示率均能清晰的显示,砧镫关节呈'L'形.但镫骨底板和镫骨的前、后脚显示欠佳,约有1/3可以显示.结论:CTVE成像技术能很好地显示中耳腔内部的听骨链立体结构,特别是可以部分显示镫骨底板,该技术将在活体上对中耳腔形态及功能的研究有重要意义.Objective: To explore the technique of CT virtual endoscopy (CTV E) on Ossicular chain and study its ability to display the normal middle ear.Met hods: Spiral CT scan of the middle ears was performed with 1.0mm slice thickness and 1.0 pitch in 15 normal subjects (30 ears). Bone algorithm and 0.1~0.2 mm re construction interval were adopted, while the ability of CTVE displaying the nor mal middle ear structures was analyzed. Results: It was completely revealed that malleus, anvil, malleus-anvil joint and incudostapedial joint could be demonstr ated clearly. Only in 30% cases, floorplate, anterior crus and posterior crus of stapes could be observed. Conclusions: CTVE technique can diplay stereoscopic i mage of middle ear, especially the floorplate of stapes. It will be important to study the form and the function of middle ear on living body.

关 键 词：仿真内窥镜 中耳腔 听骨链 

分 类 号：R322.922[医药卫生—人体解剖和组织胚胎学]