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Acoustic imaging using high- and low-frequency ultrasound

Research Project

Project/Area Number 16K06380
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Measurement engineering
Research InstitutionThe University of Electro-Communications

Principal Investigator

Nomura Hideyuki  電気通信大学, 大学院情報理工学研究科, 准教授 (90334763)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsパラメトリックアレイ / パルス圧縮 / 低周波超音波 / 合成開口 / 整相加算 / パラメトリック超音波 / パラメトリック音源 / 超音波応用計測 / 超音波イメージング / 計測工学
Outline of Final Research Achievements

We conducted a basic study for ultrasonic imaging method using high - and low-frequency ultrasound. In particular, parametric ultrasound with pulse compression was introduced for low-frequency ultrasound imaging. First, the pulse compression of chirp-modulated parametric ultrasound was realized. Next, the proposed method is applied to ultrasound imaging. The proposed method showed different images different from conventional high-frequency ultrasound images which did not separate neighboring objects and objects near a strong scattering object. In addition, the introduction of high-order M-sequence coding realized low-frequency ultrasound images with high peak to sidelobe ratio.

Academic Significance and Societal Importance of the Research Achievements

パラメトリック超音波であっても,適切に1次波超音波を変調することで,チャープ信号やM系列信号の生成であることが示され,さらに線形信号に対して適用されていたパルス圧縮処理が,非線形信号であるパラメトリック超音波信号においても有効であることが示された.これらの点が,学術的に興味深い.これらの成果は,低周波超音波イメージング実現を後押しするのに大いに役立ち,従来型の高周波法とは異なる特徴の抽出が期待できる点で社会的な意義ある成果である.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (12 results)

All 2018 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Time sidelobe reduction of pulse-compressed parametric ultrasound with maximum-length sequence excitation2018

    • Author(s)
      Nomura Hideyuki, Nishioka Riku
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 57 Issue: 7S1 Pages: 07LC05-07LC05

    • DOI

      10.7567/jjap.57.07lc05

    • NAID

      210000149291

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Feasibility of low-frequency ultrasound imaging using pulse compressed parametric ultrasound2018

    • Author(s)
      Nomura Hideyuki, Adachi Hideo, Kamakura Tomoo
    • Journal Title

      Ultrasonics

      Volume: 89 Pages: 64-73

    • DOI

      10.1016/j.ultras.2018.04.007

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Low-frequency parametric ultrasound imaging using pulse compression with maximum-length sequence excitation2018

    • Author(s)
      Nomura Hideyuki, Nishioka Riku
    • Journal Title

      Proc. of Meetings on Acoustics

      Volume: 34 Pages: 030001-030001

    • DOI

      10.1121/2.0000840

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Low-frequency parametric ultrasound imaging using pulse compression with maximum-length sequence excitation2018

    • Author(s)
      Nomura Hideyuki, Nishioka Riku
    • Organizer
      21th Int’l Symp. on Nonlinear Acoustics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 低周波パラメトリック超音波による厚さ測定法の検討2018

    • Author(s)
      野村 英之, 西岡 陸
    • Organizer
      日本音響学会2018年春季研究発表会
    • Related Report
      2017 Research-status Report
  • [Presentation] Application of parametric ultrasound to low-frequency acoustic imaging2017

    • Author(s)
      Hideyuki Nomura
    • Organizer
      International Congress on Ultrasonics 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] M系列信号によるパラメトリック超音波のパルス圧縮2017

    • Author(s)
      野村 英之, 西岡 陸
    • Organizer
      第38回超音波エレクトロニクスの基礎と応用に関するシンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] M系列位相変調を用いたパラメトリック差音のパルス圧縮の検討2017

    • Author(s)
      西岡 陸, 野村 英之
    • Organizer
      電子情報通信学会超音波研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] 低周波パラメトリック超音波画像における空間分解能の実験的評価2017

    • Author(s)
      野村 英之
    • Organizer
      電子情報通信学会超音波研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] パラメトリック超音波を用いた低周波超音波イメージングの方位方向分解能評価2017

    • Author(s)
      野村 英之
    • Organizer
      日本音響学会2017年秋季研究発表会
    • Related Report
      2017 Research-status Report
  • [Presentation] パルス圧縮パラメトリック音源による低周波超音波イメージングの分解能改善2016

    • Author(s)
      野村 英之
    • Organizer
      第37回超音波エレクトロニクスの基礎と応用に関するシンポジウム
    • Place of Presentation
      釜山(韓国)
    • Year and Date
      2016-11-16
    • Related Report
      2016 Research-status Report
  • [Presentation] パルス圧縮パラメトリック音源を用いた低周波超音波イメージングの分解能評価2016

    • Author(s)
      野村英之
    • Organizer
      日本音響学会2016年秋季研究発表会
    • Place of Presentation
      富山大学(富山県富山市)
    • Year and Date
      2016-09-14
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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