Experimental validation of simultaneous excitation of orthogonal eoded push pulses for fast shear wave elastography

Takuya Matsumoto, Kengo Kondo, Takeshi Namita, Makoto Yamakawa, Tsuyoshi Shiina

研究成果: Conference contribution

抄録

Shear wave elastography is useful for quantitatively evaluating tissue elasticity by measuring the speed of a shear wave induced within the body by acoustic radiation. The purpose of this paper is to demonstrate a pushing-and-imaging sequence, coded push pulse excitation to increase the signal-to-noise ratio (SNR) of the observed shear wave propagation without increasing measurement time and push pulse amplitude. In this paper, we irradiate multiple coded-pulse sequences from different locations at the same time and separate overlapped shear waves by decoding to quickly image a wider area with high SNR. We divided the aperture into two sub-apertures and irradiated coded pulse sequences from each sub-aperture at the same time using Orthogonal Golay Code (OGC). The received shear waves induced by two push pulse sequences are overlapped but are separated orthogonaly after postprocessing. As a result, measurement time decreases and SNR increases due to push pulse compression. The proposed method was validated with an elasticity quality assurance phantom using a linear probe (VeraSonics, L7-4).

本文言語English
ホスト出版物のタイトル2017 IEEE International Ultrasonics Symposium, IUS 2017
出版社IEEE Computer Society
ISBN(電子版)9781538633830
DOI
出版ステータスPublished - 2017 10月 31
外部発表はい
イベント2017 IEEE International Ultrasonics Symposium, IUS 2017 - Washington, United States
継続期間: 2017 9月 62017 9月 9

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

Conference

Conference2017 IEEE International Ultrasonics Symposium, IUS 2017
国/地域United States
CityWashington
Period17/9/617/9/9

ASJC Scopus subject areas

  • 音響学および超音波学

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