An ultrasonic method for noninvasive estimation of vascular impedance to an absolute level: in vitro validation of the relationship between impedance and phase velocity

Anders Eriksson, Hans W. Persson, Kjell Lindström. An ultrasonic method for noninvasive estimation of vascular impedance to an absolute level: in vitro validation of the relationship between impedance and phase velocity. IEEE Trans. Biomed. Engineering, 47(4):517-526, 2000. [doi]