Safety assessment of microwave breast imaging techniques: A comparison between two different approaches

Safety assessment of ultra-wideband (UWB) microwave breast imaging (MBI) techniques is examined in this contribution. Specifically, two different approaches have been applied to evaluate the specific energy absorption (SA) produced by UWB antennas inside realistic breast models. The adopted power levels and pulse repetition periods of the tissue sensing adaptive radar (TSAR) system have been considered to be representative of frequency-swept MBI techniques. Three different unit voltage UWB pulses have been instead envisaged for MBI systems directly based on time-domain measurements. Results indicate that the evaluated SA is below limits prescribed by safety standards.