High frame rate echocardiography using diverging beams

Hideyuki Hasegawa*, Hiroshi Kanai

*この論文の責任著者

研究成果: 書籍の章/レポート/会議録会議への寄与査読

4 被引用数 (Scopus)

抄録

Echocardiography is a widely-used modality for diagnosis of the heart. It enables observation of the shape of a heart and estimation of global heart function based on B-mode and M-mode imaging. Subsequently, methods for estimating myocardial strain and strain rate have been developed to evaluate regional heart function. Furthermore, it has been recently shown that measurements of transmural transition of myocardial contraction/relaxation and propagation of vibration caused by closure of a heart valve would be useful for evaluation of myocardial function and viscoelasticity. However, such measurements require a frame rate much higher than that achieved by conventional ultrasonic diagnostic equipment. In the present study, a method based on parallel receive beamforming using diverging waves in transmit was developed to achieve high-frame-rate echocardiography over 300 Hz. The spatial resolution of the proposed method was validated using fine nylon wires. Although the widths at half maxima of the point spread functions obtained by diverging waves were slightly larger than those obtained by conventional beamforming and parallel beamforming with plane waves, the point spread functions, which were very similar to that obtained by conventional beamforming could be realized by parallel beamforming with diverging beams and compounding. Furthermore, a heart of a 23-year-old healthy male was measured, and a frame rate of 316 Hz, which was much higher than that realized by conventional sector scanning of several tens of Hertz, was realized with a full lateral field of view of 90 degrees.

本文言語英語
ホスト出版物のタイトル2011 IEEE International Ultrasonics Symposium, IUS 2011
ページ132-135
ページ数4
DOI
出版ステータス出版済み - 2011
イベント2011 IEEE International Ultrasonics Symposium, IUS 2011 - Orlando, FL, 米国
継続期間: 2011/10/182011/10/21

出版物シリーズ

名前IEEE International Ultrasonics Symposium, IUS
ISSN(印刷版)1948-5719
ISSN(電子版)1948-5727

学会

学会2011 IEEE International Ultrasonics Symposium, IUS 2011
国/地域米国
CityOrlando, FL
Period2011/10/182011/10/21

ASJC Scopus 主題領域

  • 音響学および超音波学

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