高分辨CT斜矢状位对儿童大前庭水管的诊断价值  

Evaluation of sagittal multiplanar reconstruction oblique images with high-resolution computed tomography in diagnosis of large vestibular aqueduct

作　　者：张建基[1] 孙晓卫[1] 赵建设[2] 窦芬芬[1] 江应慧[1] 董春华[2] 易明岗[2] 

机构地区：[1]山东大学齐鲁儿童医院耳鼻咽喉科,山东250022 [2]山东大学齐鲁儿童医院放射科,山东250022

出　　处：《中华耳科学杂志》2008年第2期204-208,共5页Chinese Journal of Otology

基　　金：济南市科技局基金项目(2005032)

摘　　要：目的探讨高分辨CT(high resolution CT,HRCT)斜矢状位多平面重组对大前庭水管(large vestibu-lar aqueduct,LVA)的诊断价值,寻求对前庭水管扩大的最佳诊断方法。方法对83例(166耳)感音神经性聋患者行HRCT横断位扫描,对原始数据行冠状位及斜矢状位的多平面重组,所得图像由2位影像学医师及1位耳科医师分别进行诊断,并比较作出诊断所需观察图像幅数。结果被三位医师诊断为LVA的耳数,轴位分别为23耳、20耳、21耳,冠状位分别为19耳、18耳、20耳,重组斜矢状位分别为27耳、27耳、27耳;轴位所需图像幅数平均为6幅,冠状位平均为9幅,斜矢状位为2幅。结论HRCT斜矢状位多平面重组为诊断LVA的最佳图像,所需图像幅数最少,诊断正确率高,可以提高感音神经性聋患者的病因检出率。Objectiive To evaluate the role of muhiplanar reconstruction （MPR） oblique images in diagnosis of a large vestibular aqueduct （LVA）, and to find a best scan plane for its visualization. Methods High- resolution CT （HRCT） scanning was performed in 83 patients （166 ears） with sensorineural hearing loss and the original data processed with MPR. The axial, coronal and oblique images generated with these techniques were independently reviewed for LVA by two radiologist and one ENT doctor, and the numbers of scan designators required for diagnosis of LVA were compared. Results Three doctors reached the diagnosis of LVA in 23, 20 and 21 ears based on axial scan, in 19, 18 and 20 ears on coronal scan and in 27, 27 and 27 ears on the MPR oblique images, respectively. Six and 9 CT scan designators on average were required for diagnosis of LVA respectively in the axial and coronal scan, whereas only 2 were required in the MPR oblique images. Conclusion MPR oblique images have a high sensitivity and specificity and require the least scan designators in diagnosis of LVA.

关 键 词：大前庭水管 体层摄影术 X线计算机 

分 类 号：R764.3[医药卫生—耳鼻咽喉科] R814.42[医药卫生—临床医学]