ABSTRACT
This work concerns the electrical properties of waveguide applicators consisting of flanged rectangular waveguides filled with a dielectric, used in medical applications (microwave thermography and local hyperthermia). The reflection coefficient and the near field configuration in lossy materials were obtained in some cases analytically and in some other cases numerically. The validity of these methods was verified experimentally. The study shows that the matching of the applicator and the penetration depth in a lossy material, such as a living tissue, depend not only on the tissue characteristics but also on the characteristics of the applicator itself.
Subject(s)
Microwaves/therapeutic use , Models, Biological , Thermography/instrumentation , Electromagnetic Fields , Hot Temperature , Muscles/radiation effects , Skin/radiation effects , Thermography/methodsABSTRACT
A basic experiment showing the possibility of combining microwave local heating of subcutaneous living tissue, and microwave radiometry by the same system was carried out. The combined process may be used - in hyperthermia therapy, for measurement and control of the local temperature, - in some diagnoses using radiometry to detect diseased tissue.
