Title :
Non-invasive estimation of vascular impedance
Author :
Eriksson, A. ; Persson, H.W. ; Lindström, K.
Author_Institution :
Dept. of Electr. Meas., Lund Inst. of Technol., Sweden
Abstract :
Vascular impedance is a quantity that characterises the properties of the vascular bed. In the large arteries, the impedance has a close relationship to the pulse wave velocity. Due to the elastic properties of an artery, the wall pulsation was used for non-invasive estimation of the pulse wave velocity. Two vessel diameters, longitudinal separated, were measured simultaneously with single element transducers. The agreement between the theoretical relationship and measured data was evaluated on an in vitro model. The results showed a good agreement with the reference in the frequency range 1-10 Hz
Keywords :
biomedical measurement; elasticity; haemodynamics; mechanical variables measurement; 1 to 10 Hz; artery elastic properties; in vitro model; large arteries; noninvasive estimation; pulse wave velocity; single element transducers; vascular bed properties characterization; vascular impedance; vessel diameter; wall pulsation; Arteries; Blood; Equations; Frequency; Impedance; In vitro; Pulse measurements; Ultrasonic transducers; Ultrasonic variables measurement; Viscosity;
Conference_Titel :
Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-3615-1
DOI :
10.1109/ULTSYM.1996.584173
