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Proceedings Paper

Induced hyperthermia in brain tissue: comparison between contact Nd:YAG laser system and automatically controlled high-frequency current
Author(s): G. Nowak; Athanase-Jorge Angelo Terzis; O. Rentzsch; H. Arnold
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Paper 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.

Paper Details

Date Published: 1 June 1990
PDF: 12 pages
Proc. SPIE 1200, Laser Surgery: Advanced Characterization, Therapeutics, and Systems II, (1 June 1990); doi: 10.1117/12.17432
Show Author Affiliations
G. Nowak, Medical Univ. of Luebeck (Germany)
Athanase-Jorge Angelo Terzis, Medical Univ. of Luebeck and Medical Laser Ctr. (Germany)
O. Rentzsch, Medical Univ. of Luebeck (Germany)
H. Arnold, Medical Univ. of Luebeck (Germany)

Published in SPIE Proceedings Vol. 1200:
Laser Surgery: Advanced Characterization, Therapeutics, and Systems II
Stephen N. Joffe; Kazuhiko Atsumi, Editor(s)

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