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既往研究示美尼尔氏病CT多表现为前庭导水管显示不佳及其邻近骨质发育不良,美尼尔氏病手术发现内淋巴囊较小且多位于后半规管前下方。但两者对照研究少见。作者对38例(7例为双侧性)美尼尔氏病患者进行了内耳CT及内淋巴囊手术所见的对照观察。①在横断CT外半规管层测量后半规管至岩骨后颅窝缘的最短距离(简称为P-P间距):2mm以下者为“短”;3mm以上者为“长”;2～
Previous studies have shown that Meniere’s disease CT showed poor performance of the vestibular aqueduct and its adjacent bone dysplasia, Meniere’s disease found within the lymphatic sac smaller and more in the posterior semicircular canal below. However, the two control studies are rare. Thirty-eight patients (7 bilateral) with Meniere’s disease underwent CT and endolymphatic sac surgery. ① The shortest distance between the semicircular canal and the posterior cranial margin of the petrous bone (referred to as the P-P spacing) after the transection CT was measured by the semicircular canal: “short” below 2mm; “long”