ICS was uniformly smeared onto the bronchial mucosa,forming an empty tube image without obstruction of the lumen. Its excretion and absorption was rapid with little side effect.

• ICS支气管造影图像清晰，对比好，造影剂均匀涂抹在粘膜表面，不阻塞管腔，排出吸收快，副作用小。