我院自1987年开始使用CT以来,副鼻窦扫描通常采用横断位扫描法,近几年随着鼻副窦手术的广泛开展,为了在手术中准确了解病变范围程度,越来越多地在术前进行CT冠状位扫描。 1.扫描方法及参数 患者俯卧于扫描床上,双臂平放于两侧,头尽量后仰,下颌尽力前伸并紧靠床面正中,叮嘱患者头颅不动,扫描时断层面基线与听哐线垂直。扫描范围包括鼻 Since our hospital began to use CT in 1987, paranasal sinus scanning usually adopts transverse scan method. In recent years, with the extensive development of paranasal sinus surgery, in order to accurately understand the extent of the lesion during surgery, more and more patients Coronal CT scanning before. 1. Scanning methods and parameters Patient prone position on the scanning bed, arms flat on both sides of the head as far as possible backwards, the jaw stretched out and close to the middle of the bed, told the patient fixed head, scan the baseline and cut off the floor 听 哐Line vertical. Scan range includes nose