Prevalence of Superior Semicircular Canal Dehiscence in Coronal Images of Temporal Bone Computed Tomography and Its Diagnostic Value in Korean Population.
10.3342/kjorl-hns.2017.00752
- Author:
Eun Sub LEE
1
;
Yong Tae CHO
;
Yong Hwi AN
;
Hyun Joon SHIM
Author Information
1. Department of Otorhinolaryngology-Head and Neck Surgery, Eulji University School of Medicine, Eulji Medical Center, Seoul, Korea. eardoc11@eulji.ac.kr
- Publication Type:Original Article
- Keywords:
Computed tomography;
ROC curve;
Semicircular canals
- MeSH:
Diagnosis;
Ear;
Humans;
Methods;
Prevalence*;
Retrospective Studies;
ROC Curve;
Semicircular Canals*;
Sensitivity and Specificity;
Temporal Bone*
- From:Korean Journal of Otolaryngology - Head and Neck Surgery
2018;61(9):453-458
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND AND OBJECTIVES: This study aimed to analyze the prevalence of superior semicircular canal dehiscence (SSCD) in the coronal images of high-resolution temporal bone computed tomography (TBCT) and to evaluate the diagnostic accuracy of coronal images for SSCD syndrome. SUBJECTS AND METHOD: We retrospectively reviewed high-resolution TBCT scans of 217 patients (434 ears) with SSCD due to various causes. The dehiscence ratio (slices showing dehiscence/total slices showing the superior semicircular canal) in the coronal images of TBCT was calculated, and the optimal cutoff value for the diagnosis of SSCD syndrome was determined using the receiver operating characteristics (ROC) curve. RESULTS: Of the 434 ears, 64 (14.7%) presented SSCD in more than one slice of the coronal images of TBCT, but only three patients (0.7%) were confirmed with SSCD syndrome. Based on the ROC curve analysis for the dehiscence ratio of 64 ears, the optimal cutoff value for the diagnosis of SSCD syndrome was 0.67 with 100% sensitivity and 90.2% specificity. CONCLUSION: The majority of cases diagnosed with SSCD syndrome using the coronal images of TBCT were asymptomatic or false-positive. The dehiscence ratio in the coronal images of TBCT combined with a typical symptom can be a highly sensitive and specific diagnostic tool for SSCD syndrome.
