正常人内耳MR成像观察及解剖测量  

MAGNETIC RESONANCE IMAGING OF NORMAL INNER EAR AND ANATOMIC MEASUREMENT

作　　者：于海玲[1] 张秋贵[1] 于爱华[1] 

机构地区：[1]青岛大学医学院附属医院耳鼻咽喉科,山东青岛266003

出　　处：《青岛大学医学院学报》2005年第1期31-32,35,共3页Acta Academiae Medicinae Qingdao Universitatis

摘　　要：①目的　利用MR对正常人内耳进行形态学观察和测量,并与颞骨标本测量结果进行比较,旨在探讨内耳的MR表现及其正常形态大小,为该部位病变的定位诊断以及内耳显微外科手术提供有价值的解剖学依据。②方法　选择33例无任何耳部疾患的正常志愿者(男24例,女9例),对两侧内耳进行 MR三维重建成像,并对3个半规管进行测量;同时制作26侧成人颞骨骨迷路标本进行观察和测量,将两者结果进行比较。③结果　33例MR三维重建成像均能满意显示两侧内耳的解剖结构。前庭、耳蜗、半规管、内听道显示清晰,可对其形态进行仔细观察。MR成像测得3个半规管内周长、外周长,以后半规管最长,上半规管次之,外半规管最短,其规律与尸头测量结果一致。④结论　利用MR成像技术能立体而直观地显示内耳的结构,其测量结果与尸头测量结果有一定差值,但规律一致,可为临床提供正常人内耳成像特点及解剖学参考。Objective To compare the magnetic resonance imaging (MRI) findings of the inner ear and the data of anatomical measurement from temporal bone for the purpose of investigation of the manifestation of inner ear on MRI and to provide a valuable anatomical basis for the diagnosis of the diseases located in that area and microsugery. Methods MRI scans of inner ears were studied in 33 normal volunteers with no any specific abnormalities or symptoms and 26 bony labyrinths samples were made from temporal bones and mea- sured. Results Anatomical structures of the inner ear were well demonstrated in all the 33 cases. With T_2 weighted Fast-ASE sequence,all three semicircular canals, utricle,saccule, cochlea and IAC produced high signal intensity. Of the three semicircular canals,the internal and external perimeters and the acreages on the selected plane of the posterior semicircular canal (p.s.c)were the largest and those of the lateral emicircular canal(l.s.c) were the smallest. The same results were obtained from the bony labyrinth. Conclusion MRI with Fast-ASE sequence might show,stereoscopically and directly,the minute structures of inner ear .The measurement results, though, have a definite difference compared with the results from cadaveric head ,the pattern is coincident, it provides an anatomical reference for clinical understanding of inner ear.

关 键 词：迷路 磁共振成像 解剖学 局部 

分 类 号：R445.2[医药卫生—影像医学与核医学]