Hasegawa M, Oku T, Tanaka H, Watanabe I, Suzuki S
J Laryngol Otol. 1983 Nov;97(11):1013-5. doi: 10.1017/s0022215100095906.
A six-year-old female with congenital bilateral choanal atresia was examined by CT (computed tomography) and contrast radiography. CT clearly demonstrated the existence of choanal atresia, and differentiated osseous stenosis from membranous stenosis in the choanae. CT may be the first choice of radiological examination for the pre-operative diagnosis of congenital choanal atresia.
一名患有先天性双侧后鼻孔闭锁的六岁女性接受了CT（计算机断层扫描）和造影检查。CT清晰地显示了后鼻孔闭锁的存在，并区分了后鼻孔处的骨性狭窄和膜性狭窄。CT可能是先天性后鼻孔闭锁术前诊断的首选影像学检查方法。
