咽腔为一气道,前为软腭,后为咽后壁软组织。在普通X线片上为纵行的透明影,难以确切分辨各组织的形态和相互关系。临床上,口腔颌面外科医师对先天性腭裂患者在诊断和决定手术方案时,需观察和了解患者咽腔形态和腭咽闭合的状态,了解软腭在静止和发音时的功能活动,软腭发育情况以及软腭与咽后壁的距离等,据此选择手术方 Pharynx as an airway, before the soft palate, posterior pharyngeal soft tissue. In the ordinary X-ray film for the longitudinal transparent shadow, it is difficult to accurately distinguish the organization of the shape and interrelationships. Clinically, oral and maxillofacial surgeons in the diagnosis and determination of surgical patients with congenital cleft palate need to observe and understand the patient pharyngeal morphology and velopharyngeal closed state, understand the soft palate at rest and pronunciation of the functional activity, the development of the soft palate As well as the distance between the soft palate and the posterior wall of the pharynx, and so on