NEW TYPES OF MICROWAVE DIATHERMY APPLICATORS -- COMPARISON OF PERFORMANCE WITH CONVENTIONAL TYPES
G. Kantor · 1977
New direct contact applicators produce more uniform heating patterns in tissue phantoms than conventional spaced applicators.
Plain English Summary
Researchers compared heating patterns of new direct contact applicators with conventional spaced applicators using planar phantoms of simulated fat and muscle tissue. The direct contact applicators provided more uniform heating than the spaced applicators. Leakage radiation for a commercial direct contact applicator was measured at less than 5 mW/cm² per 100 W at 5 cm spacing. Scattered field levels for loaded applicators were typically 20 mW/cm² per 100 W at 13 cm distance.
Why This Matters
The study aimed to examine the technical feasibility of using direct contact applicators for microwave diathermy at 2.45 GHz and compare them with conventional spaced applicators. An added goal was to achieve uniform heating instead of the peaked heating typical of conventional applicators. Conventional applicators in clinical use at 2.45 GHz include spaced applicators for high power therapy and direct contact applicators for low power therapy. Direct contact applicators are considered inherently safe with similar surface curvatures. The circular aperture horn design includes a flange-choke to suppress leakage and a resistive termination to absorb reflections.
Show BibTeX
@article{new_types_of_microwave_diathermy_applicators_comparison_of_performance_with_conv_g5091,
author = {G. Kantor},
title = {NEW TYPES OF MICROWAVE DIATHERMY APPLICATORS -- COMPARISON OF PERFORMANCE WITH CONVENTIONAL TYPES},
year = {1977},
}