Electromagnetic properties of biological tissues. Interaction of radiofrequency (RF) fields with biological tissues. Computational methods to estimate electromagnetic fields inside human body: Analytical and semi-analytical methods. Method of moments (MoM), Finite Difference -Time Domain (FDTD) method, Finite Element method (FEM), Hybrid methods. Inverse scattering methods. Medical applications of RF electromagnetic fields, Magnetic Resonance Imaging (MRI), Microwave tomography, Microwave radiometry, Hyperthemia. Safety issues and guidelines for limiting human exposure to RF electromagnetic fields. Mobile communications safety.