摘要
应用成年犬研究Nd-YAG激光照射胃、大肠及食管粘膜的安全条件。使用接触头照射胃、大肠条件2s×25W,肉眼见粘膜碳化时组织损伤不超过粘膜下层;使用非接触头照射胃、大肠,条件3s×50W,肉眼见灰白隆起时组织损伤在粘膜下层。认为以上条件安全有效,接触头照射具有较强的组织损伤能力,小能量可达非接触头高能量所达组织损伤效果。
Safety condition of using Nd-YAG laser to irradiate the esophagogastric andcolonic mucosa of dogs was studied. Irradiation time of non-contact laser beam is from 0.5to 3 seconds and the power is from 30 to 50 watts.The results showed that the naked-eyechange of mucosa is ashen eminence and damage of tissue reaching submucosa when stom-ach and colon were irradiated with non-contact laser beam,the power of which is 50 wattsand time 3 seconds. Naked-eye change of mucosa is carbonization and damage of stomachnot beyond submucosa and damage of colon reaching submcosa when stomach and colonwere irradiated with contact laser beam,and the power of which is 25 watts and time 2seconds. It should be thought to be safe and effective. Esophagus perforation may occurwith contact laser irradiation when its power is 20~25 watts and time 2 seconds.
出处
《中日友好医院学报》
1994年第4期190-192,共3页
Journal of China-Japan Friendship Hospital