Modeling of the dielectric properties of trabecular bone samples at microwave frequency

R. M. IRASTORZA; E. BLANGINO; C. M. CARLEVARO; F. VERICAT

MEDICAL AND BIOLOGICAL ENGINEERING AND COMPUTING

SPRINGER HEIDELBERG

Lugar: HEIDELBERG; Año: 2014 vol. 52 p. 439 - 447

0140-0118

In this paper the dielectric properties of human trabecular bone are evaluated under physiological condition in the microwave range. Assuming a two components medium, simulation and experimental data are presented and discussed. A special experimental setup is developed in order to deal with inhomogeneous samples. Simulation data are obtained using finite difference time domain from a realistic sample. The bone mineral density of the samples are also measured. The simulation and experimental results of the present study suggest that there is a negative relation between bone volume fraction (BV/TV) and permittivity (conductivity): the higher the BV/TV the lower the permittivity (conductivity). This is in agreement with the recently published in vivo data.