CAJ | 학술논문

目的应用双源CT(dual source computed tomography,DSCT)观察国人内听道的形态,并测最内听道各径线数值,探讨其临床应用价值.方法对正常志愿者402例804耳行颞骨薄层扫描,多平面重建,观察内听道的形态,并对各相关径线进行测量.结果内听道形态为平行管状699耳,喇叭口状53耳,壶腹状50耳,不规则型2耳.内听道长度为(9.810±1.830)mm,内听道底管径为(5.084±0.739)mm×(3.246±0.613)mm,中段管径为(5.044±0.956)mm×(4.228±0.791)mm,内耳门区前后径为(5.049±1.05)mm,内耳门区上下径为(5.657±1.196)mm.两侧内听道各测量数值统计学上无显著差异;男女之间有统计学差异,这与文献报道不同:部分年龄组之间也有统计学差异.结论 DSCT薄层扫描后多平面重建可清楚显示内听道的形态,并能精确测量内听道的管径及长度,对活体解剖测量具有指导意义,为临床和影像检查提供诊断依据.
목적 응용쌍원CT(dual source computed tomography,DSCT)관찰국인내은도적형태,병측최내은도각경선수치,탐토기림상응용개치.방법 대정상지원자402례804이행섭골박층소묘,다평면중건,관찰내은도적형태,병대각상관경선진행측량.결과 내은도형태위평행관상699이,나팔구상53이,호복상50이,불규칙형2이.내은도장도위(9.810±1.830)mm,내은도저관경위(5.084±0.739)mm×(3.246±0.613)mm,중단관경위(5.044±0.956)mm×(4.228±0.791)mm,내이문구전후경위(5.049±1.05)mm,내이문구상하경위(5.657±1.196)mm.량측내은도각측량수치통계학상무현저차이;남녀지간유통계학차이,저여문헌보도불동:부분년령조지간야유통계학차이.결론 DSCT박층소묘후다평면중건가청초현시내은도적형태,병능정학측량내은도적관경급장도,대활체해부측량구유지도의의,위림상화영상검사제공진단의거.
Objective To assess the value of dual source computed tomography (DSCT) in clinical practice for demonstrating anatomy of internal auditory canal (IAC). Methods A total of 402 healthy adults(804 ears) were includ ed in this study. Thin-section CT scans of the temporal bone were obtained. The IAC were examined and measured on multi-planer reconstruction(MPR) images. Results IAC morphology can be characterized as cylinder(n= 699), trumpet (n=53), ampulla (n=50) and irregular (n=2). The length of the IAC was 9.810 ± 1.830 mm. The cross caliber of the IAC was 5.084 ± 0.739 mm×3.246 ± 0.613 mm near the fundus and 5.044 ± 0.956 mm × 4.228 ± 0.791 mm in the middle sec tion. The antero-posterior diameter of the internal auditory foramen (INF) was 5.049 ± 1.05 mm and the height was 5.657 ± 1.196 mm. There was no statistically significant difference in these measures between the left and right IACs, although statistically significant differences were noticed between sexes (contrary to literature reports) and among some age groups. Conclusion Anatomy of the IAC can be clearly displayed and measured on DSCT. MPR images can guide vivi section and facilitate clinical diagnosis.