Title :
Continuous wave ultrasonic doppler tonometry
Author :
Akinin, Abraham ; Yang, Jian ; Williams, Albert ; Lee, Albert ; Pourhoseini, Pedram ; Fronek, Arnost ; Cauwenberghs, Gert
Author_Institution :
Dept. of Bioeng., Univ. of California San Diego, La Jolla, CA, USA
Abstract :
A variety of cardiovascular conditions such as hypertension are related to the decay in the mechanical properties of blood vessels. We combine continuous wave Doppler ultrasound measurement of blood velocity with high-resolution compressive force sensing to design a sensor to analyze the hemodynamic characteristics of blood vessels. We test the specifications of our device through an ultrasonic phantom we developed and a set of calibration routines for the tonometer, the Doppler velocity analysis and the design of a blood mimicking fluid. Finally we demonstrate the application of our Doppler tonometer in the analysis of veins and arteries. We show the change in hemodynamic parameters typical to a veins and artery during Doppler Tonometry.
Keywords :
Doppler measurement; biomechanics; biomedical ultrasonics; blood flow measurement; cardiovascular system; force sensors; medical disorders; phantoms; Doppler tonometer; Doppler velocity analysis; arteries; blood mimicking fluid design; blood velocity; blood vessels; calibration routines; cardiovascular conditions; continuous wave Doppler ultrasound measurement; continuous wave ultrasonic Doppler tonometry; hemodynamic characteristics; hemodynamic parameters; high-resolution compressive force sensing; hypertension; mechanical properties; sensor design; ultrasonic phantom; veins; Arteries; Blood; Doppler effect; Fluids; Force; Ultrasonic imaging; Ultrasonic variables measurement; Doppler; blood pressure; hemodynamics; medical devices; non-invasive; sensors; ultrasound;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2014 IEEE
Conference_Location :
Lausanne
DOI :
10.1109/BioCAS.2014.6981729
