Hentona H, Ohkubo J, Tsutsumi T, Tanaka H, Komatsuzaki A
Department of Otorhinolaryngology, School of Medicine, Tokyo Medical and Dental University.
Nihon Jibiinkoka Gakkai Kaiho. 1994 Mar;97(3):450-6. doi: 10.3950/jibiinkoka.97.450.
Pneumatization of the petrous apex was investigated in 226 subjects without middle ear disease by means of target imaging CT. The degree of pneumatization of all subjects was 32.7% (148/452 ears), but no difference in degree was revealed with distinction of bilateral ears or between sexes. In 148 ears with pneumatization of the petrous apex, a higher degree of pneumatization was found in larger mastoid cavities, suggesting that pneumatization of the petrous apex correlates with pneumatized air cells in other parts of the temporal bone. Pneumatization of all parts of the petrous apex was found in about 40% (58/148 ears), and of some parts in about 60% (90/148 ears). In the latter cases, pneumatized air cells were more often found in the lower portions of the CT slices than in the higher ones. These results indicate that pneumatization of the petrous apex must be taken into consideration in studies measuring the gas composition and volume of the middle ear.
通过靶向成像CT对226例无中耳疾病的受试者的岩尖气化情况进行了研究。所有受试者的气化程度为32.7%（148/452耳），但双侧耳及性别之间在气化程度上未发现差异。在148例有岩尖气化的耳中，在较大的乳突腔中发现了更高程度的气化，这表明岩尖气化与颞骨其他部位的气化气房相关。约40%（58/148耳）的岩尖所有部位均有气化，约60%（90/148耳）的岩尖部分部位有气化。在后一种情况下，气化气房在CT切片下部比上部更常见。这些结果表明，在测量中耳气体成分和体积的研究中必须考虑岩尖气化情况。
