A method for measuring sound from vortices in the carotid artery comprises: first and second quality control procedures, wherein the quality control compares detected sounds to pre-determined sounds,and upon confirmation of the quality control procedures, detecting sounds generated by the heart and sounds from vortices in the carotid artery for at least 30 seconds.
NON-INVASIVE METHOD FOR MEASURING SOUND FREQUENCIES CREATED BY VORTICES IN CAROTID ARTERY