High-resolution CT with multi-planar reformation in diagnosis of stapedial otosclerosis

VernacularTitle:高分辨率CT多平面重组对镫骨性耳硬化症的诊断价值
Author: Rujian HONG ¹ ; Yanbo YIN ; Yucheng PAN ; Yan SHA
Author Information

1. 复旦大学附属眼耳鼻喉科医院放射科
Keywords: Otosclerosis; Stapes; Tomography,X-ray computed
From: Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2015;50(11):925-928
CountryChina
Language:Chinese
Abstract: Objective To evaluate the value of HRCT with multi-planar reformation (MPR) in the diagnosis of otosclerosis.Methods 138 ears in 129 patients with otosclerosis confirmed by surgery were evaluated retrospectively, using the MPR image along stapes as standard image, and 132 normal ears were collected as the control group.Results In the otosclerosis group, HRCT-MPR was positive in 108 ears, suspicious positive in 12 ears, and negative in 18 ears.In the control group, HRCT-MPR was positive in 4 ears,suspicious positive in 9 ears,and negative in 119 ears.The sensitivity for HRCT-MPR was 87.0％ and the specificity was 90.2％.However,with 2 mm axial CT alone ,the sensitivity was only 47.8％.The positive findings were mainly fenestral foci which related to stapes.Conclusions HRCT-MPR showed high rate of sensitivity and specificity.We recommend the MPR image along stapes as standard image for otosclerosis diagnosis.