The work is devoted to experimental research of the method of near-field microwave diagnostics of burn wounds. This method has been tested and calibrated in controlled condition by measurements of two-layered medium «spirit-teflon». The complex dielectric permittivity of skin tissues with thermal injury was measured using the constructed sensors with sounding depth 3 and 5 mm. It is experimentally established the permittivity of the burn wound is less than intact skin. The dependence of the electrodynamics parameters from the burn’s depth was established, which can be used for express analysis degree of thermal wound.
The aim of the work was an estimation of the effect of reactive oxygen and nitrogen species on the scar tissue fragment ex vivo. It was found that the treatment of scar tissue fragments by gas flow from singlet oxygen and nitric oxide generators leads to change dielectric properties of the tissue and the intensity of free radical processes. The peculiarity of the singlet oxygen action is a moderate increase permittivity. The NO effect at a concentration of 20 ppm is associated with a marked increase in permittivity and conductivity.
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