Abstract
A blood mimicking fluid (BMF) is imperative for the evaluation of Doppler ultrasound. Doppler ultrasound still causes errors due to some artifacts such as aliasing and presence of grating lobes. One of the other velocimeters is the optical particle image velocimeter (PIV). This study initially developed an in vitro measurement system for analyzing flowing BMF with ultrasonic and optical PIVs. The acoustic properties such as speed of sound, attenuation, and backscatter coefficient of BMF equivalent to the human blood, used for both ultrasonic and optical PIVs were analyzed in a frequency range of 4-12 MHz. The velocity profiles were estimated by ultrasonic and optical PIVs using a block matching method. A difference between velocities obtained by ultrasonic and optical data was within 4.0% using BMF with 20 μm polyamide particle at 0.2% concentration that realized the acoustic properties and speckle patterns similar to those in ultrafast ultrasound blood flow imaging.
Original language | English |
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Article number | SG1067 |
Journal | Japanese Journal of Applied Physics |
Volume | 61 |
Issue number | SG |
DOIs | |
State | Published - 2022/07/01 |
Keywords
- Acoustic properties
- Blood flow
- Blood mimicking fluid
- Particle image velocimetry
- Ultrafast ultrasound imaging
ASJC Scopus subject areas
- General Engineering
- General Physics and Astronomy