Abstract. Experimental study results of the method of
near-field microwave diagnostics of subsurface dielectric inhomogeneities with millimeter-centimeter
sizes are obtained with the set of resonant microwave probes (using edge capacity
of cylinder capacitor) with different depth of sounding. These results are presented
for test experiments with the spirit-teflon medium and in the application to the
medical-biological diagnostics of skin. In analysis, the solution of integral equation
that related probe capacity variations (determined from resonance parameters
measured above an inhomogeneous medium) with the spatial distribution of
inhomogeneities of complex permittivity. This method has been tested and calibrated
in controlled condition by measurements of two-layered medium (spirit-teflon).
It appeared possible to to determine experimentally and study the kernel the
integral equation of the corresponding inverse problem, as well as to study
efficiency of its solution. Then, the developed algorithm has been applied in
sounding of the subsurface profile of complex permittivity of the sound human
skin as well as of profile variations of dielectric parameters of skin burning wounds
of rats. Results demonstrate real possibilities of various possible
applications of this method in the medical-biological diagnostics of the inner
skin structure as well as of its deceases, including those related to burning
wounds. This methods gives the possibility to determine the depth and volume of
these wounds that is very important to the proper choose of the treatment
strategy.
Key words: tomography, holography, dielectric,
inhomogeneous media, ňnear-field microwave diagnostics.
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