抄録
The effect of Nd-YAG-LASER: in liver surgery, especially in the treatment of hepatic tumor and injury, was investigated histopathologically in laboratory dogs and human clinical cases by means of laser scalpel. The device used was Molectron Model 8000 Nd-YAG-LASER. Hepatic substance affected by laser irradiation may be classified into 4 distinct layers according to the severity of histological change, i. e.
1) Vaporization layer 2) Coagulation necrosis layer 3) Acidophilic degeneration layer and VI) Edema layer.
Laser scalpel permits removal of tissue at low accumulated energy, hence causing lesser tissue damage. It ensures a shortening of the duration of operation with a consequent reduction of blood loss and is anticipated to have a wide range of application in surgical procedures.
