Abstract
Previous studies have shown that local hyperthermia using Nd: YAG laser (laserthermia) is a safer and more reliable method for treating depressed early gastric cancer than both contact and non-contact laser irradiation. This study compares laserthermia with conventional hyperthermia transmitted by a metal probe.
1) In vivo studies on carcinoma-bearing mice suggest that laserthermia is more effective than conventional hyperthermia.
2) In vitro studies on cultivated rat liver cells revealed a cytocidic effect of laser light even at temperatures below 38°C
These findings indicate that laserthermia has a synergistic effect of laser light and hyperthermia.
