Method:The canine bronchia were irradiated with different power and different irradiation time.We observed the effcts of ablation and thermal coagulation of different laser srttings.

• 方法:以犬作为实验对象, 以不同功率、不同照射时间照射离体支气管壁,通过肉眼、光镜、电镜观察不同激光参数的生物学作用。