Method and apparatus for detecting coronary stenosis. The apparatus comprises an acoustic sensor and a microcomputer that identifies the standard S1 and S2 heart sounds, heart rate, and determines the diastolic interval of the subject and thereafter estimates the acoustic energy levels within a 2 octave...http://www.google.es/patents/US6048319?utm_source=gb-gplus-sharePatente US6048319 - Non-invasive acoustic screening device for coronary stenosis
Non-invasive acoustic screening device for coronary stenosis