目的：明确耳硬化症的CT表现，探讨高分辨率CT在诊断耳硬化症中的价值。方法：收集2015年12月—2018年3月期间在我院经临床、手术确诊的耳硬化症患者25例，同时收集同期的经确诊的非耳硬化症患者20例；患者术前均行多层螺旋CT检查。结果：20例患者（40耳）共35耳CT检查显示异常，灵敏度87.5%，特异度80%。窗型共22耳，发生率62.9%，CT主要表现前庭窗开大或狭小，镫骨脚板增厚。耳蜗型共9耳，发生率25.7%，耳蜗周围骨质吸收，密度减低。混合型共4耳，发生率11.4%，内耳迷路广泛受累，CT表现为骨迷路破坏及骨质密度减低。结论：高分辨率CT诊断耳硬化症具有高灵敏度与特异度，能够明确耳硬化病变部位、范围及程度，能有效发现病灶并确定分型，对术前评估、手术方案选择提供重要信息。
Abstract
Objective: To determine the CT findings of otosclerosis and evaluate the value of high resolution CT in the diagnosis of otosclerosis. Materials and Methods: 25 patients with confirmed diagnosed by clinical and surgical examination were collected from December 2015 to March 2018 at the First Affiliated Hospital of China Medical University. 20 patients with confirmed non-otosclerosis sclerosis were collected at the same time. The patients were examined by high resolution CT before operation. Results: A total of 35 ears were found abnormal in 20 patients(40 ears) after CT examination, with the sensitivity of 87.5%, and specificity of 80%. 22 ears were the vestibular window type(62.9%), mainly represented as the enlargement or narrowing of the vestibular window and the thickening of the stapes foot plate on CT. 9 ears were the cochlear window type(25.7%), mainly represented as the low density of the bones around the cochlea on CT. 4 ears were the mixed type (11.4%), mainly represented as the low density and the destruction of the bones in labyrinth on CT. Conclusion: Otosclerosis could be diagnosed on high-resolution CT with high sensitivity and specificity. High resolution CT can identify the site and extent of otosclerosis, and can effectively identify the lesions and determine the type, providing important information for preoperative assessment and surgical plan.
关键词
耳硬化病 /
体层摄影术 /
螺旋计算机
Key words
Otosclerosis /
Tomography, spiral computed
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