Virapongse C, Shapiro R, Sarwar M, Bhimani S, Crelin E S
J Comput Assist Tomogr. 1985 Jan-Feb;9(1):85-94. doi: 10.1097/00004728-198501000-00018.
We examined 11 human fetuses (18 to 30 weeks' gestation) with high resolution CT to study the developmental ossification of the two main component structures of the skull base, the temporal and sphenoid bones. Computed tomography, with its excellent contrast discrimination, allowed clear visualization of the morphology of ossifying centers. Skull base growth during this gestational period was found to be a dynamic event with rapid changes in morphology and interosseous relationships. The growth of the sphenoid body on CT corroborates the studies done by Kodama, who used dehydrated skulls. The temporal bone proceeded in a stepwise fashion; complete encapsulation of the membranous labyrinth occurred before it grew anteroposteriorly to form the apex and mastoid.
我们用高分辨率CT检查了11例人类胎儿（妊娠18至30周），以研究颅底两个主要组成结构——颞骨和蝶骨的发育性骨化。计算机断层扫描具有出色的对比度分辨能力，能够清晰显示骨化中心的形态。在此妊娠期，颅底生长是一个动态过程，形态和骨间关系变化迅速。蝶骨体在CT上的生长情况与Kodama使用脱水颅骨所做的研究结果相符。颞骨以逐步方式发育；在其前后生长形成尖部和乳突之前，膜迷路已完全被包裹。
