The size of both utricle and saccule was mm× mm. The diameters of cochlear basement and duct were 8mm and .～.mm, respect螺旋板及听神经为低信号，半规管直径为～mm，椭圆囊与球囊大小为mm× mm，蜗底直径为8mm，蜗轴高mm，蜗管直径为．～．mm，内听道直径为～mm。