paper 150305064130

Published: 2015-07-09

Performance Evaluation of Dipole versus Modified Bow-Tie in Annular Phased Array Applicators

Andreas Fhager,

Andreas Fhager

Chalmers University of Technology, Sweden

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Mikael Persson,

Mikael Persson

Chalmers University of Technology, Sweden

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Pegah Takook,

Pegah Takook

Chalmers University of Technology, Sweden

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Hana Dobsicek Trefna

Chalmers University of Technology, Sweden

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Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)1909-1912

Abstract

Phased arrays are the common type of applicators for deep hyperthermia systems to heat tumors selectively while keeping healthy tissues at normal temperatures. Annular array applicators with dipoles and water bolus have been improved in several studies to deposit energy efficiently in head and neck tumors. In this study we investigate the performance of a modified Bow-Tie antenna versus half-wave dipole as single elements in annular phased array applicators to heat tumors in head and neck region. Hyperthermia quality indicators have been calculated for each case to quantify the quality of treatment outcome in two different tumor positions in a head-and-neck phantom. The obtained results indicates that dipoles are appropriate phased array elements to heat superficial tumors, while modified Bow-Ties are more suitable in heating big deep-seated tumors.

Citation

Andreas Fhager, Mikael Persson, Pegah Takook, and Hana Dobsicek Trefna, "Performance Evaluation of Dipole versus Modified Bow-Tie in Annular Phased Array Applicators," Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)1909-1912

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