Novel microwave and millimeter-wave biomedical applications

Three biomedical applications of microwave and millimeter-wave technology are reviewed: thermal burn imaging, dental diagnostics, and detection. Burn imaging and dental diagnostics are possible due to changes in the dielectric properties of the damaged tissue as compared to the normal tissue. Therefore, it is critical to evaluate the complex dielectric permittivity for the tissue and frequency of interest. Vital signs detection uses the motion sensor principle of the Doppler effect, which requires phase demodulation. Dental diagnostics and vital signs detection use active systems, while burn evaluation would use a passive imaging system