Design of a microwave array hyperthermia applicator with a semicircular reflector | Zendy

Ruth V. Sabariego | Zendy; L. Landesa | Zendy; F. Obelleiro | Zendy

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Design of a microwave array hyperthermia applicator with a semicircular reflector

Author(s) -

Ruth V. Sabariego,

L. Landesa,

F. Obelleiro

Publication year - 1999

Publication title -

medical and biological engineering and computing

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.593

H-Index - 98

eISSN - 1741-0444

pISSN - 0140-0118

DOI - 10.1007/bf02513356

Subject(s) - specific absorption rate , microwave , biomedical engineering , reflector (photography) , antenna (radio) , materials science , dielectric , penetration depth , optics , parabolic antenna , penetration (warfare) , absorption (acoustics) , acoustics , electrical engineering , optoelectronics , computer science , engineering , physics , telecommunications , light source , operations research

The design of a hyperthermia applicator for heating biological tissues is presented in which the applicator consists of an array antenna surrounded by a perfect electrically conducting reflector. The heat hazard to superficial tissues is reduced by the introduction of a dielectric protecting layer over them. A method of moments formulation is applied to approximate the electric field within the biological medium and a closed form expression is presented for the electromagnetic coupling problem, which enables an optimisation procedure to be performed. The applicator enhances both penetration and focusing: deep tumours, close to the bone region, are heated and the percentage of biologically healthy tissue exposed to a specific absorption rate (SAR) hazard level diminishes by 53.8%.

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