CAJ | 학술논문

目的：探讨正常前庭导水管在C T图像显示的形态。方法收集自2012年1月～2014年12月来我院行颞骨C T扫描患者112例。由两位放射学医师独立在横轴位、单斜位、双斜位图像上对前庭导水管远段的中点及外口进行测量，计算观察者间一致性及变异系数，统计前庭导水管显示为裂隙样、管状结构、未显示的例数，进行统计分析。结果C T表现为管状结构144例，裂隙状结构75例，未见显示的5例，前庭导水管在各层面上显示不同形态的差别有统计学意义。前庭导水管的中点及外口在横轴位、单斜位、双斜位图像的变异系数分别为37．4％，33．0％；36．5％，40．5％；47.5％，64．5％。两位放射学医师在各层面上前庭导水管中点的测量有较好的一致性。结论结果显示前庭导水管在横轴位、单斜位、双斜位图像上形态及大小有高度的变异性，可以表现为裂隙状、管状，少数无显示。
목적：탐토정상전정도수관재C T도상현시적형태。방법수집자2012년1월～2014년12월래아원행섭골C T소묘환자112례。유량위방사학의사독립재횡축위、단사위、쌍사위도상상대전정도수관원단적중점급외구진행측량，계산관찰자간일치성급변이계수，통계전정도수관현시위렬극양、관상결구、미현시적례수，진행통계분석。결과C T표현위관상결구144례，렬극상결구75례，미견현시적5례，전정도수관재각층면상현시불동형태적차별유통계학의의。전정도수관적중점급외구재횡축위、단사위、쌍사위도상적변이계수분별위37．4％，33．0％；36．5％，40．5％；47.5％，64．5％。량위방사학의사재각층면상전정도수관중점적측량유교호적일치성。결론결과현시전정도수관재횡축위、단사위、쌍사위도상상형태급대소유고도적변이성，가이표현위렬극상、관상，소수무현시。
Objective To investigate the morphology of vestibular aqueduct by the CT images .Methods One hundred twelve patients underwent CT scan of temporal bone for evaluation of the reasons other than sensorineural hearing loss and vertigo attacks ,and their temporal bone CT studies were reviewed .Midpoint and opercular measurements were performed in the axial ,single‐oblique and double‐oblique images .The morphometric analysis was also reported .The intraclass corre‐lation coefficients were reported .The coefficient of variation was calculated for each group and anatomic location .Results The morphology of the vestibular aqueduct may be tubular ,fissured or invisible and the respective number were found to be 144 ,75 and 5% .The coefficient of variation of vestibular aqueduct showed to be 37 .4% on axial image ,36 .5% on sin‐gle‐oblique image ,47 .5% on double‐oblique image ,in midpoint ,and in operculum it was 33 .0% ,40 .5% ,and 64.5% , respectively .There was substantial agreement between the two radiologists for the midpoint measurement in the axial , single‐oblique and double‐oblique images .Readers had almost perfect agreement for the operculum measurement in the axi‐al ,single‐oblique plane and double‐oblique plane .Conclusion The vestibular aqueduct presented with high variability in morphology and dimension in axial images ,single‐oblique images and double‐oblique images .The vestibular aqueduct may presented with the tubular ,fissured and invisible forms .