Methods First the patients were diagnosed as OSAHS by PSG,and the position of the obstruction at oral pharynx was ensure by DR.

• 方法首先患者经PSG检测确定为OSAHS,再通过DR双能量减影对口咽部阻塞部位及程度进行确定,用蜡堤固定下颌于前伸下移位置,再用DR同一技术定量评价矢状面软组织变化情况。