2008 14th Conference on Microwave Techniques, 2008
Microwave hyperthermia is a promising method of cancer treatment used to increase the temperature... more Microwave hyperthermia is a promising method of cancer treatment used to increase the temperature within the interval of 40 - 44degC. The goal of this paper is to introduce the possibility of treatment planning for superficial hyperthermia using COMSOL Multiphysics. The real model of the patient with recurrent breast cancer was developed. The waveguide horn applicator with aperture of 10
2007 International Conference on Electromagnetics in Advanced Applications, 2007
The possibility to use shorted circular micros trip antenna as an applicator for local hypertherm... more The possibility to use shorted circular micros trip antenna as an applicator for local hyperthermia is described in this paper. This applicator is designed to provide a local treatment on areas located on the body surface or in its proximity. The applicator is designed by aid of 3D electromagnetic field simulator SEMCAD X light at working frequency of 434 MHz. Results of impedance matching measurement and 3D SAR distributions in agar phantom show that these types of microwave applicators can be effectively used for the treatment of tumours with a diameter of approximately 4 cm.
Journal of Electromagnetic Waves and Applications, 2013
ABSTRACT Waveguide-based applicators are used for hyperthermia treatment of superficial tumors, e... more ABSTRACT Waveguide-based applicators are used for hyperthermia treatment of superficial tumors, e.g. chest wall recurrences. During superficial hyperthermia treatment (SHT), the patient is in the near field of these antennas, so its radiating properties may vary. To maximize the transfer power from generators towards treatment area, waveguide-based applicators usually feature means for tuning the applicators. The purpose of this study was to investigate whether waveguide-based applicators for SHT really require such tuning. Hereto, we designed and optimized a waveguide lucite applicator at 434 MHz, applying a muscle phantom and a layered (skin, fat and muscle) phantom to mimic the patient. Applicator performance was measured for different water bolus temperatures and temperatures of the water circulating the applicator by studying impedance matching. dB was measured for nine locations at the skin of a volunteer and three different water bolus temperatures. We conclude that tuning of waveguide-based applicators is not required when the applicator is properly designed.
2008 14th Conference on Microwave Techniques, 2008
Microwave hyperthermia is a promising method of cancer treatment used to increase the temperature... more Microwave hyperthermia is a promising method of cancer treatment used to increase the temperature within the interval of 40 - 44degC. The goal of this paper is to introduce the possibility of treatment planning for superficial hyperthermia using COMSOL Multiphysics. The real model of the patient with recurrent breast cancer was developed. The waveguide horn applicator with aperture of 10
2007 International Conference on Electromagnetics in Advanced Applications, 2007
The possibility to use shorted circular micros trip antenna as an applicator for local hypertherm... more The possibility to use shorted circular micros trip antenna as an applicator for local hyperthermia is described in this paper. This applicator is designed to provide a local treatment on areas located on the body surface or in its proximity. The applicator is designed by aid of 3D electromagnetic field simulator SEMCAD X light at working frequency of 434 MHz. Results of impedance matching measurement and 3D SAR distributions in agar phantom show that these types of microwave applicators can be effectively used for the treatment of tumours with a diameter of approximately 4 cm.
Journal of Electromagnetic Waves and Applications, 2013
ABSTRACT Waveguide-based applicators are used for hyperthermia treatment of superficial tumors, e... more ABSTRACT Waveguide-based applicators are used for hyperthermia treatment of superficial tumors, e.g. chest wall recurrences. During superficial hyperthermia treatment (SHT), the patient is in the near field of these antennas, so its radiating properties may vary. To maximize the transfer power from generators towards treatment area, waveguide-based applicators usually feature means for tuning the applicators. The purpose of this study was to investigate whether waveguide-based applicators for SHT really require such tuning. Hereto, we designed and optimized a waveguide lucite applicator at 434 MHz, applying a muscle phantom and a layered (skin, fat and muscle) phantom to mimic the patient. Applicator performance was measured for different water bolus temperatures and temperatures of the water circulating the applicator by studying impedance matching. dB was measured for nine locations at the skin of a volunteer and three different water bolus temperatures. We conclude that tuning of waveguide-based applicators is not required when the applicator is properly designed.
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Papers by T. Drizdal