Simultaneous Photoacoustic and Ultrasound Imaging Using a Hemispherical Sensor Array

Shunto Takaoka, Kengo Kondo, Takeshi Namita, Makoto Yamakawa, Tsuyoshi Shiina

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

A hemispherical sensor array enables photoacoustic (PA) imaging with more spatially isotropic and finer vasculature than those of a planar sensor array. Combining ultrasound (US) and PA images can clarify structural relations of tissues and vessels. Although a piezoelectric element of the hemispherical sensor array can perform pulse-echo, the array is sparse because of the few channels on data acquisition systems. Therefore, beamforming cannot be applied properly: adequate US image quality is obtainable. For this study, we used mechanical scanning to increase the number of virtual elements. We also used synthetic aperture (SA) imaging to improve US image quality. They enable simultaneous PA and US measurements using a hemispherical sensor array. Measurements taken using PA and US signals from a tissue-mimicking agar phantom demonstrate that scanning sensors improved the US image contrast and the field of view compared to results obtained when a sensor is not scanned. Moreover, a PA image visualized only optical absorbers. Furthermore, combining PA and US images facilitates identification of where optical absorbers are located.

本文言語English
ホスト出版物のタイトル2018 IEEE International Ultrasonics Symposium, IUS 2018
出版社IEEE Computer Society
ISBN(電子版)9781538634257
DOI
出版ステータスPublished - 2018 12月 17
外部発表はい
イベント2018 IEEE International Ultrasonics Symposium, IUS 2018 - Kobe, Japan
継続期間: 2018 10月 222018 10月 25

出版物シリーズ

名前IEEE International Ultrasonics Symposium, IUS
2018-October
ISSN(印刷版)1948-5719
ISSN(電子版)1948-5727

Conference

Conference2018 IEEE International Ultrasonics Symposium, IUS 2018
国/地域Japan
CityKobe
Period18/10/2218/10/25

ASJC Scopus subject areas

  • 音響学および超音波学

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