Aberration correction for biological acoustic impedance microscope

T. Uemura, T. Suzuki, K. Hanai, N. Hozumi, S. Yoshida, K. Kobayashi, S. Yamamoto, Y. Saijo

研究成果: Conference contribution

抜粋

This report deals with the scanning acoustic microscope for imaging cross sectional characteristic acoustic impedance of biological soft tissues. A focused pulse wave is transmitted to the object placed on the "rear surface" of a plastic substrate. The reflected signals from the target and reference are interpreted into local acoustic impedance. Two-dimensional profile is obtained by scanning the transducer. This method, using a spherical transducer, produces a significant aberration, because the sound speed of the substrate is different from water that is used as a coupling medium. For this reason the spatial resolution is reduced. The spatial resolution was improved by using 3D deconvolution technique, considering the impulse response of the acoustic system. In addition, as the incidence is not vertical, not only longitudinal wave but also transversal wave is generated in the substrate. Calibration for acoustic impedance was carried out after the deconvolution process, considering the above mentioned oblique incidence.

元の言語English
ホスト出版物のタイトル2009 IEEE International Ultrasonics Symposium and Short Courses, IUS 2009
出版者Institute of Electrical and Electronics Engineers Inc.
ページ1518-1521
ページ数4
ISBN(印刷物)9781424443895
DOI
出版物ステータスPublished - 2009
イベント2009 IEEE International Ultrasonics Symposium, IUS 2009 - Rome, Italy
継続期間: 2009 9 202009 9 23

出版物シリーズ

名前Proceedings - IEEE Ultrasonics Symposium
ISSN(印刷物)1051-0117

Other

Other2009 IEEE International Ultrasonics Symposium, IUS 2009
Italy
Rome
期間09/9/2009/9/23

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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  • これを引用

    Uemura, T., Suzuki, T., Hanai, K., Hozumi, N., Yoshida, S., Kobayashi, K., Yamamoto, S., & Saijo, Y. (2009). Aberration correction for biological acoustic impedance microscope. : 2009 IEEE International Ultrasonics Symposium and Short Courses, IUS 2009 (pp. 1518-1521). [5441436] (Proceedings - IEEE Ultrasonics Symposium). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ULTSYM.2009.5441436