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

Michiya Mozumi, Masaaki Omura, Ryo Nagaoka, Magnus Cinthio, Hideyuki Hasegawa*

*この論文の責任著者

研究成果: ジャーナルへの寄稿学術論文査読

8 被引用数 (Scopus)

抄録

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.

本文言語英語
論文番号SDDE07
ジャーナルJapanese Journal of Applied Physics
60
SD
DOI
出版ステータス出版済み - 2021/07

ASJC Scopus 主題領域

  • 工学一般
  • 物理学および天文学一般

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