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.
出处
《中国临床解剖学杂志》
CSCD
北大核心
2004年第3期261-262,265,共3页
Chinese Journal of Clinical Anatomy
关键词
仿真内窥镜
中耳腔
听骨链
CT virtual endoscopy(CTVE)
middle ear
ossicular chain
