Induced hyperthermia in brain tissue: comparison between contact Nd:YAG laser system and automatically controlled high-frequency current

G. Nowak; Athanase-Jorge Angelo Terzis M.D.; O. Rentzsch; H. Arnold

doi:10.1117/12.17432

1 June 1990 Induced hyperthermia in brain tissue: comparison between contact Nd:YAG laser system and automatically controlled high-frequency current

G. Nowak, Athanase-Jorge Angelo Terzis M.D., O. Rentzsch, H. Arnold

Author Affiliations +

Proceedings Volume 1200, Laser Surgery: Advanced Characterization, Therapeutics, and Systems II; (1990) https://doi.org/10.1117/12.17432
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

Concerning hyperthermia treatment, knowledge of time-temperature and of temperature distributions within tumor volumes is essential to obtain a maximal therapeutic effectivity. New techniques are developed to overcome these difficulties. Two different heat sources, the contact Nd:YAG laser system and the automatically controlled highfrequency current are investigated. In a defined volume of 1 cm3, the laser system reaches 45°C after 1.8 s exposition with 15 W output power. The highfrequency current reaches 45°C after 48 s exposition with 18.75 W output current. Both heat sources present an exponential decrease of the temperature profile depending on the distance and prove efficient for inducing anti-tumoral hyperthermia. The tissue heat clearence is compensated for by intermittent laser and highfrequency current application.

Citation Download Citation

G. Nowak, Athanase-Jorge Angelo Terzis M.D., O. Rentzsch, and H. Arnold "Induced hyperthermia in brain tissue: comparison between contact Nd:YAG laser system and automatically controlled high-frequency current", Proc. SPIE 1200, Laser Surgery: Advanced Characterization, Therapeutics, and Systems II, (1 June 1990); https://doi.org/10.1117/12.17432

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