Ito A, Isono M, Murata K, Tanaka H, Kawamoto M, Azuma H
Department of Otolaryngology, Kinki University School of Medicine, Osaka.
Nihon Jibiinkoka Gakkai Kaiho. 1997 Nov;100(11):1368-74. doi: 10.3950/jibiinkoka.100.1368.
The total volume of air cells in the temporal bone and the regional volumes (tympanic cavity, petrous apex and mastoid antrum) were measured by using a system which we developed for the measurement of air cells by computerized digital processing of high-resolution CT images. We examined a total of 41 normal ears in 25 subjects ranging in age from 12 to 82 years (mean age 46.2). The total volume of pneumatization was approximately 4.05 +/- 1.59 ml and the volume of air cells in the tympanic cavity was 0.45 +/- 0.07 ml. Alveolation of the petrous apex was detected in 15 (36.6%) of the 41 ears, and the volume of air cells in the petrous apex was approximately 0.24 +/- 0.26 ml. The volume of air cells in the mastoid antrum was approximately 0.53 +/- 0.20 ml. The ears were divided into two groups, one with petrous alveolation (15 ears) and the other without it (26 ears). The ratios of regional pneumatization to total pneumatization were studied in the two groups. Statistically significant differences were found in the total volume and the volume of air cells in the mastoid antrum between the groups with and without petrous pneumatization (p < 0.05). The total volume of air cells did not correlate to the volumes of air cells in the tympanic cavity, mastoid cavity and petrous apex.
使用我们开发的通过对高分辨率CT图像进行计算机数字处理来测量气房的系统，测量颞骨中气房的总体积以及各区域体积（鼓室、岩尖和乳突窦）。我们共检查了25名年龄在12至82岁（平均年龄46.2岁）受试者的41只正常耳朵。气化的总体积约为4.05±1.59毫升，鼓室内气房的体积为0.45±0.07毫升。在41只耳朵中的15只（36.6%）检测到岩尖有蜂窝状结构，岩尖气房的体积约为0.24±0.26毫升。乳突窦气房的体积约为0.53±0.20毫升。将耳朵分为两组，一组有岩尖蜂窝状结构（15只耳朵），另一组没有（26只耳朵）。研究了两组中各区域气化与总气化的比例。在有和没有岩尖气化的两组之间，乳突窦气房的总体积和气房体积存在统计学显著差异（p<0.05）。气房的总体积与鼓室、乳突腔和岩尖气房的体积无关。
