随着医学影像新技术不断发展,螺旋CT又面世数年,它的特点是扫描速度快,一次憋气可获得胸部、腹部全部容积扫描资料,避免了常规CT因呼吸运动而造成的病变遗漏。在注射造影剂的“黄金”时期进行纵隔螺旋CT扫描,有利于区分纵隔内血管性或非血管性的结构异 With the continuous development of new medical imaging technology, Spiral CT has been available for several years. It is characterized by fast scanning speed, full breath volume acquisition of the chest and abdomen at one breath, and avoids the omission of lesions caused by respiratory motion caused by conventional CT. Mediastinal spiral CT scans during the “golden” phase of contrast media injection are useful for distinguishing between vascular or non-vascular structural differences in the mediastinum