Yazawa Y, Kitahara M
Department of Otolaryngology, Shiga University of Medical Science, Otsu, Japan.
Acta Otolaryngol Suppl. 1991;481:88-90. doi: 10.3109/00016489109131353.
High resolution transverse axial CT encompassing the lateral semicircular canal was used to study the visualization of the vestibular aqueduct and to measure the minimum distance between the posterior semicircular canal and the posterior petrous surface (P-P distance) in Meniere's disease and chronic otitis media. The results indicate that the development of the bone between the posterior semicircular canal and the posterior petrous surface, which usually contains the endolymphatic sac, is significantly poorer in affected ears than in nonaffected ears in unilateral Meniere's disease, and much poorer than in chronic otitis media.
采用包含外侧半规管的高分辨率横轴位CT研究梅尼埃病和慢性中耳炎患者前庭导水管的显影情况，并测量后半规管与岩骨后表面之间的最小距离（P-P距离）。结果表明，在单侧梅尼埃病中，后半规管与通常包含内淋巴囊的岩骨后表面之间的骨质发育，患耳明显比未患耳差，且比慢性中耳炎差得多。
