側頭骨含気蜂巣の発達的変化

DOI 被引用文献2件 参考文献9件

書誌事項

タイトル別名
  • Developmental Changes in the Mastoid Air Cell System.

この論文をさがす

抄録

The growth of the air cell system with age was evaluated mainly by the planimetric method or the rectangular approximation based on the ear roentgenograms. On the contrary, our technique based on CT image proved to be much more useful because of higher accuracy and capability of 3D assessment. The detailed analyses has been obtained only through the postmortem histological study. Our method is, therefore, of high signicance because it allows to assess the antemortem developmental changes in infants.<BR>The study covered 43 males and 37 females, aged 1 to 18 years. The temporal bone was imaged by slicing at 2-mm thickness through the high resolution CT so that the entire air cell system was included, and the resultant data were analyzed by the image processing technique.<BR>It was confirmed that the volume of the infant's air cell system tended to increase with age. While the mean value of the air cell system volume in the adult is 5.97 ml, 80% cases of infants of 9-10 years, the system seemed to have grown already to this size. The 3D display of CT image allowed to study various morphological features of the system.<BR>The present report will describe our findings on the measurement of the mastoid air cell system of infant and its developmental changes with age.

収録刊行物

被引用文献 (2)*注記

もっと見る

参考文献 (9)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ