TY - JOUR
T1 - Compact microwave radiator for improving heating uniformity in hyperthermia system
AU - Choi, Woo Cheol
AU - Kim, Ki Joon
AU - Kim, Jaeheung
AU - Yoon, Young Joong
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
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U2 - 10.1109/LAWP.2014.2333033
DO - 10.1109/LAWP.2014.2333033
M3 - Article
AN - SCOPUS:84904989674
VL - 13
SP - 1345
EP - 1348
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
SN - 1536-1225
M1 - 6846272
ER -