Phantom characterization of applicators by liquid-crystal-plate dosimetry.
Int J Hyperthermia
; 7(1): 175-83, 1991.
Article
em En
| MEDLINE
| ID: mdl-2051071
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.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Temperatura Alta
/
Neoplasias
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
/
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Int J Hyperthermia
Assunto da revista:
NEOPLASIAS
/
TERAPEUTICA
Ano de publicação:
1991
Tipo de documento:
Article
País de afiliação:
Itália