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

fYear

2014

fDate

22-24 Oct. 2014

Firstpage

328

Lastpage

331

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Circuits and Systems Conference (BioCAS), 2014 IEEE

Conference_Location

Lausanne

Type

conf

DOI

10.1109/BioCAS.2014.6981729

Filename

6981729