Impact of spacing of ultrasound receiving beams on estimation of 2D motion velocity
(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
- Mozumi, Michiya ; Omura, Masaaki ; Nagaoka, Ryo ; Cinthio, Magnus LU and Hasegawa, Hideyuki LU
- organization
- publishing date
- 2021-07
- 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}}, }