Abstract: A computer-implemented process for medical sensing, the process including the steps of: accessing scattering data representing successive sets of measurements of electromagnetic wave scattering by internal features of a body part of a living subject, each said measurement representing scattering of electromagnetic waves emitted by a corresponding antenna of an array of antennas disposed about the body part as measured by a corresponding antenna of the array of antennas at a corresponding time, wherein the successive sets of measurements are temporally spaced apart; processing each of the measurements to generate corresponding spectral data representing intensities measured by the corresponding antenna at the corresponding time as a function of frequency; and processing the spectral data of each antenna for successive times to generate corresponding pulsatility data representing successive pulsations within a corresponding spatially localized region within the body part.