Phantom characterization of applicators by liquid-crystal-plate dosimetry
- 1 January 1991
- journal article
- research article
- Published by Taylor & Francis in International Journal of Hyperthermia
- Vol. 7 (1) , 175-183
- https://doi.org/10.3109/02656739109004987
Abstract
A method for the determination of the SAR distribution produced by an electromagnetic applicator for localized hyperthermia is described. The procedure for SAR evaluation consists of recording the time evolution of the temperature inside a polyacrylamide phantom by means of thermochromic liquid crystal sheets inserted in it. The technique allows a complete characterization of applicators in a very broad frequency range, using power levels of the order of those needed in real treatments. Criteria for the minimum phantom size and the maximum time duration of the characterization procedure are indicated, which allow a reliable determination of the effective field size and penetration depth of the applicator.Keywords
This publication has 3 references indexed in Scilit:
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- The Polyacrylamide as a Phantom Material for Electromagnetic Hyperthermia StudiesIEEE Transactions on Biomedical Engineering, 1984