Thermal Modeling for Intracavitary Heating

Chive, M.; Camart, J.C.; Morganti, F.

doi:10.1007/978-3-642-84801-8_15

Cited by 1 publication

(1 citation statement)

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“…Intracavitary microwave applicators reported for HT include 915 MHz helix coil for treatment of vaginal and rectal cancers [27], 915 MHz coaxial dipole antennas for prostate cancer [28], semi rigid 915 MHz coaxial dipole antenna with metallic reflector for rectal cancer [29], and 434 MHz half wave dipole for transurethral, rectal and prostate cancers [30,31]. Wire-type intracavitary applicators were also reported for HT of gynaecological cancers [29,[31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Microwave intracavitary applicator using 434 MHz conformal patch antennas for hyperthermia treatment of gynaecological cancers

Rajendran

Arunachalam

2021

IET Microwaves Antenna & Prop

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Feasibility of a 434 MHz microwave intracavitary applicator with conformal patch antennas is presented for hyperthermia treatment of gynaecological cancers. 3D numerical modelling was used to design a 434 MHz resonant conformal rectangular patch on a cylindrical alumina substrate. A conformal array applicator designed using four conformal patch antennas was evaluated in muscle tissue phantom. Applicator measurements indicated that the conformal patch resonated at 434 MHz with power reflection coefficient ρ < −35 dB, penetration depth of 12 mm at 434 MHz and −10 dB bandwidth >40 MHz. Normalised power deposition in the applicator transverse (X Y) plane yielded 25% Effective Field Size (EFS) of 180 and 175 mm 2 in simulation and measurement, respectively, for excitation of single conformal patch. The 25% EFS for excitation of two antennas was 500 and 510 mm 2 in simulation and measurement, respectively. Simulations and measurements suggest that the 434 MHz intracavitary microwave applicator with conformal patch antennas could be used to deliver adjustable and localised power deposition at the target sparing the surrounding healthy tissues.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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