Patent ID: 8414498

Claim:
A system for measuring blood flow in an organ of a subject, the system comprising: a radiofrequency generator for generating output radiofrequency signals; a plurality of electrodes, designed to be connectable to the skin of the subject, said electrodes being for transmitting said output radiofrequency signals to the organ and for sensing input radiofrequency signals of the organ; a mixer, electrically communicating with said radiofrequency generator and at least a portion of said plurality of electrodes, for mixing said output radiofrequency signals and said input radiofrequency signals, so as to provide a mixed radiofrequency signal having a radiofrequency sum and a radiofrequency difference and being indicative of the blood flow; electronic circuitry, constructed and designed to filter out a portion of said mixed radiofrequency signal; and a data processor for calculating at least one quantity using a remaining portion of said mixed radiofrequency signal, said at least one quantity being selected from the group consisting of a stroke volume, a cardiac output, a brain intra luminal blood flow and an artery blood flow rate.