NDLI: Comparison of time and frequency domain approaches for blood velocity estimation in small vessels using high frequency ultrasound

Content Provider	IEEE Xplore Digital Library
Author	Vogt, M. Pluta, A. Ermert, H.
Copyright Year	2000
Description	Author affiliation: Dept. of Electr. Eng., Ruhr-Univ., Bochum, Germany (Vogt, M.)
Abstract	Approaches for axial blood velocity estimation with pulsed wave Doppler (PWD) systems can be separated into time domain, frequency domain and combined time and frequency domain techniques. The imaging properties (spatial and velocity resolution) with these approaches are different and depend on the resolution cell size (determined by bandwidth and lateral resolution), measurement time (number of A-lines included into velocity estimation) and flow geometry (insonification angle, vessel diameter relative to resolution cell size, flow velocity profile). Simulations have been performed to analyze the imaging properties under different parameter settings and to find optimal settings for blood flow imaging in small vessels, where the flow velocity profile changes significantly over the resolution cell. The findings were validated with flow phantom measurements and in vivo measurements on small blood vessels at the back of a human hand using a high frequency (30-70 MHz) PWD-system.
Starting Page	1521
Ending Page	1524
File Size	370978
Page Count	4
File Format	PDF
ISBN	0780363655
ISSN	10510117
DOI	10.1109/ULTSYM.2000.921613
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-10-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency domain analysis Blood Image resolution Spatial resolution Fluid flow measurement Frequency measurement Frequency estimation Bandwidth Velocity measurement Size measurement
Content Type	Text
Resource Type	Article

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