^|^ldquo;In-depth^|^rdquo;Radiation Therapy by YAG Laser for Malignant Tumors in Liver under Ultrasonic Imaging

Daijo Hashimoto, Tsuyoshi Miura, Yasuo Idezuki, Hiroyuki Kanai, Keizo Yoshimura, Shigefumi Sugiura, Takayuki Tsuzi, Tatsuo Togawa

Nippon Laser Igakkaishi · 1985 · 29 citations · 0 references

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Abstract

A special quartz fiber with the tip finished in a hemispherical shape was prepared for super-wide diffusing radiation of laser beam. Under ultrasonic imaging, cubic volume of the tumor was calculated, the quartz fiber was inserted into the tumor through a 17G Tefron catheter, and continuous 5W radiation was applied for such a period as to reach the total energy of 1000 joules per one cubic centimeter of tumor. Two cases with 3 and 5cm hepatocellular carcinomas with liver cirrhosis and 8 cases of multiple liver metastasis maximum 12cm were treated under laparotomy in most cases. Dramatic drop of AFP and CEA values was observed in a few months. Post operative courses were satisfactory without hapatic dysfunction.