한국인에서 측두골 전산화단층촬영 관상면 영상에서 상반고리관 피열의 발생률과 그 진단적 가치
Prevalence of Superior Semicircular Canal Dehiscence in Coronal Images of Temporal Bone Computed Tomography and Its Diagnostic Value in Korean Population
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Background and Objectives This study aimed to analyze the prevalence of superior semicircularcanal dehiscence (SSCD) in the coronal images of high-resolution temporal bonecomputed tomography (TBCT) and to evaluate the diagnostic accuracy of coronal images forSSCD 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 wascalculated, and the optimal cutoff value for the diagnosis of SSCD syndrome was determinedusing the receiver operating characteristics (ROC) curve. Results Of the 434 ears, 64 (14.7%) presented SSCD in more than one slice of the coronalimages of TBCT, but only three patients (0.7%) were confirmed with SSCD syndrome. Basedon the ROC curve analysis for the dehiscence ratio of 64 ears, the optimal cutoff value for thediagnosis 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 imagesof TBCT were asymptomatic or false-positive. The dehiscence ratio in the coronal imagesof TBCT combined with a typical symptom can be a highly sensitive and specific diagnostictool for SSCD syndrome. Korean J Otorhinolaryngol-Head Neck Surg 2018;61(9):453-8
Abstract
Background and Objectives This study aimed to analyze the prevalence of superior semicircularcanal dehiscence (SSCD) in the coronal images of high-resolution temporal bonecomputed tomography (TBCT) and to evaluate the diagnostic accuracy of coronal images forSSCD 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 wascalculated, and the optimal cutoff value for the diagnosis of SSCD syndrome was determinedusing the receiver operating characteristics (ROC) curve. Results Of the 434 ears, 64 (14.7%) presented SSCD in more than one slice of the coronalimages of TBCT, but only three patients (0.7%) were confirmed with SSCD syndrome. Basedon the ROC curve analysis for the dehiscence ratio of 64 ears, the optimal cutoff value for thediagnosis 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 imagesof TBCT were asymptomatic or false-positive. The dehiscence ratio in the coronal imagesof TBCT combined with a typical symptom can be a highly sensitive and specific diagnostictool for SSCD syndrome. Korean J Otorhinolaryngol-Head Neck Surg 2018;61(9):453-8
참고문헌 (11)
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