Compact microwave radiator for improving heating uniformity in hyperthermia system

Woo Cheol Choi; Ki Joon Kim; Jaeheung Kim; Young Joong Yoon

doi:10.1109/LAWP.2014.2333033

Compact microwave radiator for improving heating uniformity in hyperthermia system

Woo Cheol Choi, Ki Joon Kim, Jaeheung Kim, Young Joong Yoon

Department of Electrical and Electronic Engineering

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10 Citations (Scopus)

Abstract

A compact microwave radiator is proposed for the treatment of a superficial tumor in a noninvasive hyperthermia application. The proposed radiator is designed to simplify treatment of relatively small tumors by reducing the physical size of the radiator. The proposed radiator is reduced to a size of 27.2× 27.2 mm², which corresponds to 0.038 λ × 0.038 λ at 433 MHz, so as to induce the optimal heating area for approximately 30-mm tumors, and is studied using a phantom as a model to analyze the thermal characteristics for the human body. The concept of effective treatment area (ETA) is defined in this letter in order to evaluate the area that can be sufficiently heated. The specific absorption rate (SAR) and temperature are uniformly formed on the phantom surface with a symmetrical and circular-shaped distribution. An ETA ratio of 91.6% is achieved for the measurements, corresponding to a 30.4-mm diameter, and the temperature increase required for tumor necrosis is achieved.

Original language	English
Article number	6846272
Pages (from-to)	1345-1348
Number of pages	4
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	13
DOIs	https://doi.org/10.1109/LAWP.2014.2333033
Publication status	Published - 2014

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All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Cite this

Choi, W. C., Kim, K. J., Kim, J., & Yoon, Y. J. (2014). Compact microwave radiator for improving heating uniformity in hyperthermia system. IEEE Antennas and Wireless Propagation Letters, 13, 1345-1348. [6846272]. https://doi.org/10.1109/LAWP.2014.2333033

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10.1109/LAWP.2014.2333033