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Impact of spacing of ultrasound receiving beams on estimation of 2D motion velocity

Mozumi, Michiya ; Omura, Masaaki ; Nagaoka, Ryo ; Cinthio, Magnus LU and Hasegawa, Hideyuki LU (2021) In Japanese Journal of Applied Physics 60(SD).
Abstract

For more detailed measurement of cardiovascular motion and complex blood flow, a two-dimensional (2D) velocity estimation method is required in functional ultrasound imaging. The block matching method based on the correlation function is one of the standard 2D motion estimators. In this study, we investigated the effect of lateral sampling intervals of an ultrasonic B-mode image on the accuracy in velocity estimation. In simulation, bias error (BE) in estimated velocities became -13% with an ultrasonic center frequency of 7.5 MHz and spacings of receiving beams of 0.2 mm. Such a BE was improved from -13% to -1.4% by changing the spacings from 0.2 to 0.1 mm. In the in vivo experiment, the maximum velocity obtained with spacings of 0.2 mm... (More)

For more detailed measurement of cardiovascular motion and complex blood flow, a two-dimensional (2D) velocity estimation method is required in functional ultrasound imaging. The block matching method based on the correlation function is one of the standard 2D motion estimators. In this study, we investigated the effect of lateral sampling intervals of an ultrasonic B-mode image on the accuracy in velocity estimation. In simulation, bias error (BE) in estimated velocities became -13% with an ultrasonic center frequency of 7.5 MHz and spacings of receiving beams of 0.2 mm. Such a BE was improved from -13% to -1.4% by changing the spacings from 0.2 to 0.1 mm. In the in vivo experiment, the maximum velocity obtained with spacings of 0.2 mm was underestimated by -16% as compared to those obtained with 0.1 mm. Hence, the trend was similar to that in the simulation.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Japanese Journal of Applied Physics
volume
60
issue
SD
article number
SDDE07
publisher
IOP Publishing
external identifiers
  • scopus:85104875219
ISSN
0021-4922
DOI
10.35848/1347-4065/abeac0
language
English
LU publication?
yes
id
6a4d97de-b182-416a-bdc2-77f6627b7464
date added to LUP
2021-05-12 17:03:30
date last changed
2022-04-27 01:57:13
@article{6a4d97de-b182-416a-bdc2-77f6627b7464,
  abstract     = {{<p>For more detailed measurement of cardiovascular motion and complex blood flow, a two-dimensional (2D) velocity estimation method is required in functional ultrasound imaging. The block matching method based on the correlation function is one of the standard 2D motion estimators. In this study, we investigated the effect of lateral sampling intervals of an ultrasonic B-mode image on the accuracy in velocity estimation. In simulation, bias error (BE) in estimated velocities became -13% with an ultrasonic center frequency of 7.5 MHz and spacings of receiving beams of 0.2 mm. Such a BE was improved from -13% to -1.4% by changing the spacings from 0.2 to 0.1 mm. In the in vivo experiment, the maximum velocity obtained with spacings of 0.2 mm was underestimated by -16% as compared to those obtained with 0.1 mm. Hence, the trend was similar to that in the simulation.</p>}},
  author       = {{Mozumi, Michiya and Omura, Masaaki and Nagaoka, Ryo and Cinthio, Magnus and Hasegawa, Hideyuki}},
  issn         = {{0021-4922}},
  language     = {{eng}},
  number       = {{SD}},
  publisher    = {{IOP Publishing}},
  series       = {{Japanese Journal of Applied Physics}},
  title        = {{Impact of spacing of ultrasound receiving beams on estimation of 2D motion velocity}},
  url          = {{http://dx.doi.org/10.35848/1347-4065/abeac0}},
  doi          = {{10.35848/1347-4065/abeac0}},
  volume       = {{60}},
  year         = {{2021}},
}