Two dimensional blood velocity estimation using high frame rate echocardiography with transverse oscillation approach

Hiroki Takahashi, Hideyuki Hasegawa

研究成果: 書籍の章/レポート/会議録会議への寄与査読

2 被引用数 (Scopus)

抄録

Blood velocity estimation in the cardiac cavity has been useful to diagnose the heart function. In recent years, the two-dimensional (2D) blood velocity has been estimated by detecting echoes from blood cells obtained by high-frame-rate echocardiography with diverging ultrasound emission and parallel receive beamforming. However, the stability of estimated velocities in the transverse direction (perpendicular to the axial direction) was not enough due to a low transverse frequency of an echo. The transverse frequency can be increased by the receive apodization used in the transverse oscillation (TO) approach. In the present study, the effect of the TO apodization on the accuracy of the blood velocity estimation was examined and the receive apodization was optimized. The errors in 2D velocity vectors estimated by speckle tracking were evaluated by an in-house simulation software which simulates echoes from a scatter-filled tube. The movements of the scatterers were governed by the Hagen-Poiseuille flow with a velocity of 0.4 m/s. In the obtained result, the standard deviations of estimated transverse velocities were 9.5% with the rectangular apodization, 17.0% with the Hanning apodization, and 17.5% with the TO apodization with a distance between peaks in the apodization of 48 elements, respectively, at a flow angle of 45 degree.

本文言語英語
ホスト出版物のタイトル2015 IEEE International Ultrasonics Symposium, IUS 2015
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781479981823
DOI
出版ステータス出版済み - 2015/11/13
イベントIEEE International Ultrasonics Symposium, IUS 2015 - Taipei, 台湾省、中華民国
継続期間: 2015/10/212015/10/24

出版物シリーズ

名前2015 IEEE International Ultrasonics Symposium, IUS 2015

学会

学会IEEE International Ultrasonics Symposium, IUS 2015
国/地域台湾省、中華民国
CityTaipei
Period2015/10/212015/10/24

ASJC Scopus 主題領域

  • 音響学および超音波学

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