The interaction of electromagnetic fields and biological tissues is relevant in various technical applications. The design of medical equipment and treatment plans generally benefits greatly from simulation; additionally, simulation can give insight into living tissue where measurement is almost impossible. This also holds for all kinds of wireless communication devices surrounding us such as mobile phones, where Specific Absorption Rate (SAR) planning is essential at an early stage of the design. Quantities required for certification, such as exposure values and SAR, can easily be obtained by simulation.