The character of superior semicircular canal dehiscence syndrome on multi-slice CT

VernacularTitle:上半规管裂综合征的多层螺旋CT诊断
Author: Lichun ZHANG ; Yan SHA ; Rujian HONG ; Chunfu DAI ; Fanglu CHI
Publication Type:Journal Article
Keywords: Semicircular canals; Vestibular diseases; Tomography,X-ray computer
From: Chinese Journal of Radiology 2009;43(10):1027-1030
CountryChina
Language:Chinese
Abstract: Objective To better understand the MSCT characteristic of superior semicircular canal dehiscence syndrome (SSCDS). Methods A retrospective study was conducted on 8 patients who were diagnosed with SSCD syndrome in the otology and skull base surgery group of fudan university. All the patients CT features, the conventional axial and coronal images base on high-resolution MSCT and the images displayed the whole superior semicircular canal, which were reconstructed by using the technology of MPR, were reviewed. Results All the images that displayed the whole superior semicircular canal exhibited the dehiscence. Six patients' dehiscences occur in the middle of the roof over the superior semicircular (4 of 6 dehiscences also occur in the front of the roof), 2 patients dehiscences occur in the back of the roof over the superior semicircular. The range of the maximal diameter of the dehiscence was 0.8-4.2 mm, (median value: 2.4 mm). Conclusion The technology of MPR based on the high-resolution MSCT scan is very useful in diagnosis of the SSCDS.