Krombach G A, DiMartino E, Schmitz-Rode T, Prescher A, Haage P, Kinzel S, Günther R W
Department of Diagnostic Radiology, University of Technology, Pauwelstrasse 30, 52057, Aachen, Germany.
Eur Radiol. 2003 Jun;13(6):1444-50. doi: 10.1007/s00330-003-1828-5. Epub 2003 Feb 15.
The aim of this study was to assess imaging findings of posterior semicircular dehiscence on computed tomography and to evaluate incidence of posterior and superior semicircular canal dehiscence in patients presenting with vertigo, sensorineuronal hearing loss or in a control group without symptoms related to the inner ear. Computed tomography was performed in 507 patients presenting either with vertigo ( n=128; 23 of these patients suffered also from sensorineuronal hearing loss), other symptoms related to the inner ear, such as hearing loss or tinnitus ( n=183) or symptoms unrelated to the labyrinth ( n=196). All images were reviewed for presence of dehiscence of the bone, overlying the semicircular canals. Twenty-nine patients had superior semicircular canal dehiscence. Of these patients, 83% presented with vertigo, 10% with hearing loss or tinnitus and the remaining 7% with symptoms unrelated to the inner ear. In 23 patients dehiscence of the posterior semicircular canal was encountered. Of these patients, 86% presented with vertigo, 9% with hearing loss or tinnitus and 5% with symptoms unrelated to the inner ear. Defects of the bony overly are found at the posterior semicircular canal, in addition to the recently introduced superior canal dehiscence syndrome. Significant prevalence of vertigo in these patients suggests that posterior semicircular canal dehiscence can cause vertigo, similar to superior semicircular canal dehiscence.
本研究的目的是评估计算机断层扫描后半规管裂开的影像学表现，并评估患有眩晕、感音神经性听力损失的患者或无内耳相关症状的对照组中后半规管和上半规管裂开的发生率。对507例患者进行了计算机断层扫描，这些患者中有的患有眩晕（n = 128；其中23例还患有感音神经性听力损失），有的患有内耳相关的其他症状，如听力损失或耳鸣（n = 183），还有的患有与迷路无关的症状（n = 196）。对所有图像进行检查，以确定半规管上方骨质是否存在裂开。29例患者存在上半规管裂开。在这些患者中，83%表现为眩晕，10%表现为听力损失或耳鸣，其余7%表现为与内耳无关的症状。23例患者存在后半规管裂开。在这些患者中，86%表现为眩晕，9%表现为听力损失或耳鸣，5%表现为与内耳无关的症状。除了最近提出的上半规管裂开综合征外，在计算机断层扫描中还发现后半规管存在骨质缺损。这些患者中眩晕的显著患病率表明，后半规管裂开可导致眩晕，类似于上半规管裂开。
