Doppler Velocimetry is a widely used method for estimating stroke volume (SV). The accuracy and reliability of its measurement however, is dependant on a) the correct assessment of the aortic valve cross-sectional area (CSA), and b) the maximal systolic velocity integral (SVI). The invention...http://www.google.co.uk/patents/US7186219?utm_source=gb-gplus-sharePatent US7186219 - Calibration of a doppler velocimeter for stroke volume determination
