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Development of multi-scale ultrasound pathological diagnosis method reflecting physical characteristics of living tissue

Research Project

Project/Area Number 19H04482
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 90130:Medical systems-related
Research InstitutionChiba University

Principal Investigator

Tadashi Yamaguchi  千葉大学, フロンティア医工学センター, 教授 (40334172)

Co-Investigator(Kenkyū-buntansha) 長谷川 英之  富山大学, 学術研究部工学系, 教授 (00344698)
吉田 憲司  千葉大学, フロンティア医工学センター, 准教授 (10572985)
林 秀樹  千葉大学, フロンティア医工学センター, 教授 (20312960)
小玉 哲也  東北大学, 医工学研究科, 教授 (40271986)
丸山 紀史  順天堂大学, 医学部, 准教授 (90375642)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2019: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywords超音波 / 定量診断 / 標準化 / 無侵襲 / 病理診断 / マルチスケール
Outline of Research at the Start

本研究の最終目標は、体表からの超音波観察のみで生体組織の物理的性質を細胞以下のミクロサイズから臓器単位のマクロサイズの視点で総合的に評価可能な組織性状診断技術を具現化し、「肝臓・リンパ節の切らない病理診断」を実現することである。研究期間内では、体表から任意の超音波ビームで高速かつ高解像度での超音波観察を行うための計測系の諸条件の確定と、細胞以下のミクロサイズでの生体組織の物理的性質の理解および体内組織のマクロな定量診断アルゴリズムを結びつけることを主軸とし、超音波病理診断用の基幹ロジックを確定し、その精度について、動物・ファントムでの検討を踏まえ、ヒトデータでの検証までを行う。

Outline of Final Research Achievements

Echo data of various resolutions were collected by observing the biological tissues to be evaluated in vivo with ultrasound in the frequency band used in clinical practice, and by observing them in the clinical to microscopic level frequency band after removal. We evaluated the speed of sound, backscattering coefficient, and amplitude enveloping characteristics of these data, and developed a protocol to understand the frequency dependence of each acoustic and physical property.
To promote this study, we also established a sample preparation protocol to observe excised tissue under conditions similar to those in vivo, improved the accuracy of backscattering property analysis, and proposed a model for evaluating amplitude enveloping properties.
In addition, we have constructed a system that can evaluate the movement of blood vessels and blood flow at the same time with high time resolution by fusing ultra-high-speed ultrasonic observation and tissue property evaluation technologies.

Academic Significance and Societal Importance of the Research Achievements

生体内と摘出後の同一組織について、広い周波数帯の超音波で音響的・物理的性質を評価した例は極めて少ない状況にある。本研究によって、一般的な超音波診断におけるエコー画像の成り立ちと組織性状との関係性を、細胞レベルの性質とリンクさせて考えることが可能となった。この検討方針で評価された肝臓やリンパ節の多様なデータが蓄積されることで、現状の超音波診断の限界と考えられている分解能を超越した新規の診断法が実現される。
新規診断法は、生体内の組織を摘出することなく、体外からの超音波観察のみで現状の病理診断レベルの性状評価が可能であるため、患者・医療従事者の双方にとって大きな負担軽減となり、医療費高騰を防ぐ。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (93 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (5 results) Journal Article (11 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 11 results) Presentation (77 results) (of which Int'l Joint Research: 33 results,  Invited: 1 results)

  • [Int'l Joint Research] Riverside Research/Columbia University/University of Wisconsin-Madison(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Chang Gung University(その他の国・地域(台湾))

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Riverside Research/Columbia University/University of Wisconsin-Madison(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Chang Gung University(その他の国・地域(台湾))

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Riverside Research/Columbia University(米国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] In Vivo Quantitative Ultrasound on Dermis and Hypodermis for Classifying Lymphedema Severity in Humans2022

    • Author(s)
      Masaaki Omura, Wakana Saito, Shinsuke Akita, Kenji Yoshida, Tadashi Yamaguchi
    • Journal Title

      Ultrasound in Medicine and Biology

      Volume: 48 Issue: 4 Pages: 646-662

    • DOI

      10.1016/j.ultrasmedbio.2021.12.003

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fatty liver evaluation with double-Nakagami model under low-resolution conditions2021

    • Author(s)
      Yusuke Sato, Kazuki Tamura, Shohei Mori, Dar-In Tai, Po-Hsiang Tsui, Kenji Yoshida, Shinnosuke Hirata, Hitoshi Maruyama, Tadashi Yamaguchi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60(SD) Issue: SD Pages: SDDE06-SDDE06

    • DOI

      10.35848/1347-4065/abf07d

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Verification of the influence of liver microstructure on the evaluation of shear wave velocity2021

    • Author(s)
      Daiki Ito, Takuma Oguri, Naohisa Kamiyama, Shinnosuke Hirata, Kenji Yoshida, Tadashi Yamaguchi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60(SD) Issue: SD Pages: SDDE11-SDDE11

    • DOI

      10.35848/1347-4065/abf59a

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stability of backscattering coefficient evaluation with clinical ultrasound scanner in homogeneous medium when sound field characteristics differ from reference signal2021

    • Author(s)
      Takuma Oguri, Masaaki Omura, Wakana Saito, Kenji Yoshida, Tadashi Yamaguchi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60(SD) Issue: SD Pages: SDDE24-SDDE24

    • DOI

      10.35848/1347-4065/abfa6c

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Improved evaluation of backscatter characteristics of soft tissue using high-frequency annular array2020

    • Author(s)
      , Takeru Mizoguchi, Kenji Yoshida, Jonathan Mamou, Jeffrey A. Ketterling, Tadashi Yamaguchi
    • Journal Title

      Japanese Jornal of Applied Physics

      Volume: 59 Issue: SK Pages: SKKE17-SKKE17

    • DOI

      10.35848/1347-4065/ab8bcb

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-frequency Ultrasonic Backscatter Coefficient Analysis Considering Microscopic Acoustic and Histopathological Properties of Lymphedema Dermis2020

    • Author(s)
      Masaaki Omura, Kenji Yoshida, Shinsuke Akita, Tadashi Yamaguchi
    • Journal Title

      Japanese Jornal of Applied Physics

      Volume: 59

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrasound-based lipid content quantification using double Nakagami distribution model in rat liver steatosis2020

    • Author(s)
      Kazuki Tamura, Jonathan Mamou, Kenji Yoshida, Hiroyuki Hachiya, Tadashi Yamaguchi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SK Pages: SKKE23-SKKE23

    • DOI

      10.35848/1347-4065/ab918e

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Speed of sound evaluation considering spatial resolution in a scanning acoustic microscopy system capable of observing wide spatial area2020

    • Author(s)
      Takuya Ogawa, Kanji Yoshida, Tadashi Yamaguchi
    • Journal Title

      Japanese Jornal of Applied Physics

      Volume: 59 Issue: SK Pages: SKKE13-SKKE13

    • DOI

      10.35848/1347-4065/ab83da

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Frequency dependence of attenuation and backscatter coefficient of ex vivo human lymphedema dermis2020

    • Author(s)
      Masaaki Omura,Kenij Yoshida,Shinsuke Akita,Tadashi Yamaguchi
    • Journal Title

      Journal of Medical Ultrasonics

      Volume: 47 Issue: 1 Pages: 25-34

    • DOI

      10.1007/s10396-019-00973-z

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Validation of differences in backscatter coefficients among four ultrasound scanners with different beamforming methods2020

    • Author(s)
      "Masaaki Omura, Hideyuki Hasegawa, Ryo Nagaoka, Kenji Yoshida, and Tadashi Yamaguchi"
    • Journal Title

      Journal of Medical Ultrasonics

      Volume: 47 Issue: 1 Pages: 35-46

    • DOI

      10.1007/s10396-019-00984-w

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comprehensive backscattering characteristics analysis for quantitative ultrasound with an annular array, Basic study on homogeneous scattering phantom2019

    • Author(s)
      Takeru Mizoguchi, Kazuki Tamura, Jonathan Mamou, Jeffrey A. Ketterling, Kenji Yoshida, Tadashi Yamaguchi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58(SG) Issue: SG Pages: SGGE08-SGGE08

    • DOI

      10.7567/1347-4065/ab0df9

    • NAID

      210000156387

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Evaluation of Backscattering Properties in Skin Tissue by High-frequency Annular Array2021

    • Author(s)
      Wakana Saito, Masaaki Omura, Jeffrey A. Ketterling, Shinnosuke Hirata, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 42nd Symposium on UltraSonic Electronics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FDTD verification of influence of layered structure on shear wave velocity2021

    • Author(s)
      Kodai Osato, Wakana Saito, Takuma Oguri, Naohisa Kamiyama, Shinnosuke Hirata, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 42nd Symposium on UltraSonic Electronics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Three-dimensional evaluation of the relationship between speed of sound and scattering characteristics of lymph nodes in tumor-bearing mice2021

    • Author(s)
      azuma Noguchi, Masaaki Omura, Takashi Ohnishi, Matsumoto Daiki, Tetsuya Kodama, Hideaki Haneishi, Tadashi Yamaguchi
    • Organizer
      The 42nd Symposium on UltraSonic Electronics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of relationship between liver structure and frequency dependency of speed of sound and attenuation2021

    • Author(s)
      Mai Ino, Kazuma Noguchi, Suguru Seto, Masaaki Omura, Kazuki Tamura, Shinnosuke Hirata, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 42nd Symposium on UltraSonic Electronics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Verification of Amplitude Envelope Analysis Model for NASH Liver Evaluation2021

    • Author(s)
      Yuki Ujihara, Kazuki Tamura, Shohei Mori, Dar-In Tai, Po-Hsiang Tsui, Shinnosuke Hirata, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 42nd Symposium on UltraSonic Electronics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Amplitude Envelope Analysis for Characterizatio of Fibrous Tissue and Fat Droplets in Liver2021

    • Author(s)
      Yuki Ujihara, Kazuki Tamura, Shohei Mori, Dar-In Tai, Po-Hsiang Tsui, Hiroyuki Hachiya, Shinnosuke Hirata, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      IEEE International, Ultrasonics Symposium 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 筋肉組織におけるシアウェーブエラストグラフィの評価安定性のシミュレーション検証2021

    • Author(s)
      大里晃大,西東若菜,大栗拓真,神山直久,平田慎之介,吉田憲司,山口 匡
    • Organizer
      日本音響学会2022年春季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 複数種の散乱源が混在する媒質における振幅特性の成分判定精度の検証2021

    • Author(s)
      氏原裕貴,田村和輝,森翔平,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2022年春季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ラット臓器の凍結試料における音速評価精度の検討2021

    • Author(s)
      瀬戸駿,伊能舞,野口和馬,田村和輝,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2022年春季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 多成分媒質の後方散乱係数解析における周波数依存性の検討2021

    • Author(s)
      八木風音,西東若菜,大村眞明,大栗拓真,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2022年春季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 層構造媒質の後方散乱解析における音場特性と減衰補正精度の関係性2021

    • Author(s)
      沓沢駿人,西東若菜,八木風音,大村眞朗,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2022年春季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 複数種の散乱体が混在する媒質におけるDouble-Nakagami Modelの評価精度検証2021

    • Author(s)
      比賀大成,氏原裕貴,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2022年春季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] サルコペニアの早期評価に向けた多種組織の音響特性評価の基礎検討2021

    • Author(s)
      橋本明楽,大澤侑暉,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2022年春季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] FDTDによる層構造を有する媒質における横波伝搬の基礎検討2021

    • Author(s)
      大里晃大,西東若菜,大栗拓真,神山直久,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 層構造を持つ媒質におけるアニュラアレイでの後方散乱特性評価2021

    • Author(s)
      西東若菜,大村眞朗,大澤侑暉,Ketterling Jeffrey,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 後方散乱特性解析における送受信音場と組織構造の関係性の検証2021

    • Author(s)
      八木風音,西東若菜,大村眞朗,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] NASH肝エコーの振幅包絡特性解析における組織分布と評価パラメータの関係性に関する検証2021

    • Author(s)
      原裕貴,田村和輝,森翔平,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 臓器不全マウス・ラットにおける多種組織の音響インピーダンス評価2021

    • Author(s)
      橋本明楽,大澤侑暉,平田慎之介,吉田憲司,丸山紀史,山口匡
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 臨床から顕微レベルの周波数帯におけるラット臓器の音速・減衰特性の評価2021

    • Author(s)
      伊能舞,野口和馬,瀬戸駿,吉田憲司,平田慎之介,山口匡
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 試料作製法の違いが生体組織の音速評価に与える影響の検討2021

    • Author(s)
      瀬戸駿,野口和馬,田村和輝,平田慎之介,吉田憲司,山口匡
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] アニュラアレイによる後方散乱特性解析の臨床応用へ向けた基礎検討2021

    • Author(s)
      西東若菜,大村眞朗,Jeffrey Ketterling,山口匡
    • Organizer
      日本超音波医学会第94回学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 筋のSWV評価における骨の影響の工学的考察2021

    • Author(s)
      山口匡,伊藤大貴,大栗拓真,神山直久
    • Organizer
      日本超音波医学会第94回学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 後方散乱特性解析によるリンパ浮腫組織の超音波定量評価2021

    • Author(s)
      西東若菜,大村眞朗,秋田新介,吉田憲司,山口匡
    • Organizer
      日本超音波医学会第94回学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Examination of Stability of Backscattering Coefficient Evaluation Under Clinically Applied Transmission/Reception Conditions2020

    • Author(s)
      Takuma Oguri, Masaaki Omura, Wakana Saito, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 41th Symposium on UltraSonic Electronic
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Acoustic impedance evaluation of myoblasts for quantitative diagnosis of sarcopenia2020

    • Author(s)
      Ryoya Hashimoto, Hitoshi Maruyama, Tadashi Yamaguchi
    • Organizer
      The 41th Symposium on UltraSonic Electronic
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of attenuation correction on backscattering coefficient evaluation of lymphedema2020

    • Author(s)
      Wakana Saito, Masaaki Omura, Shinsuke Akita, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 41th Symposium on UltraSonic Electronic
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of frequency dependence of speed of sound of liver in clinical to microscopic frequency band2020

    • Author(s)
      Mai Ino, Kazuma Noguchi, Wakana Saito, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 41th Symposium on UltraSonic Electronic
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Verification of the influence of microstructure in the liver on the evaluation of shear wave velocity2020

    • Author(s)
      Daiki Ito, Takuma Oguri, Mikio Suga, Tadashi Yamaguchi
    • Organizer
      The 41th Symposium on UltraSonic Electronic
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Stability verification of backscattering coefficient evaluation in medium composed of scatterers of multiple sizes2020

    • Author(s)
      azuya Ito, Masaaki Omura, Emilie Franceschini, Tadashi Yamaguchi
    • Organizer
      The 41th Symposium on UltraSonic Electronic
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Accuracy Verification of Amplitude Envelope Analysis Models for Fatty Liver Assessment2020

    • Author(s)
      Yusuke Sato, Kazuki Tamura, Shohei Mori, Po-Hsiang Tsui, Tadashi Yamaguchi
    • Organizer
      The 41th Symposium on UltraSonic Electronic
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Three-dimensional evaluation of speed of sound of lymph nodes in tumor bearing mice2020

    • Author(s)
      Kazuma Noguchi, Masaaki Omura, Takashi Ohnishi, Daiki Matsumoto, Tetsuya Kodama, Tadashi Yamaguchi
    • Organizer
      The 41th Symposium on UltraSonic Electronic
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Verification of Effect of Lipid Droplet Distribution in the Liver on Evaluation of Shear Wave Velocity2020

    • Author(s)
      Daiki Ito, Takuma Oguri, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      IEEE International, Ultrasonics Symposium 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Backscattering Analysis for Characterization of lymphedema Dermis and Hypodermis2020

    • Author(s)
      Wakana Saito, Masaaki Omura, Shinsuke Akita, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      IEEE International, Ultrasonics Symposium 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of Frequency Dependency of Speed of Sound in Homogeneous Phantoms and Diverse Rat Livers2020

    • Author(s)
      Mai Ino, Kazuma Noguchi, Kenji Yoshida, Tadashi Yamaguchi,
    • Organizer
      IEEE International, Ultrasonics Symposium 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ラット肝臓の音速評価における組織構造と試料作製法の影響の検討2020

    • Author(s)
      瀬戸 駿,野口 和馬,吉田 憲司,山口 匡
    • Organizer
      日本音響学会2021年春季研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ラット肝臓音速のミクロ-マクロサイズにおける周波数依存性の評価2020

    • Author(s)
      伊能 舞,野口 和馬,吉田 憲司,平田 慎之介,山口 匡
    • Organizer
      日本音響学会2021年春季研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] マウス担がんリンパ節における散乱体構造と音速の関係性の基礎検討2020

    • Author(s)
      野口 和馬,大村 眞朗,小島 拓也,小玉 哲也,山口 匡
    • Organizer
      日本音響学会2021年春季研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] NASH肝臓の臨床エコーデータにおける振幅包絡特性評価モデルの適用性の基礎検討2020

    • Author(s)
      氏原 裕貴,佐藤 悠佑,田村 和輝,森 翔平,Po-Hsiang Tsui ,山口 匡
    • Organizer
      日本音響学会2021年春季研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] マウス筋芽細胞およびHuH7細胞の分化過程における音響インピーダンス評価2020

    • Author(s)
      大澤 侑暉,橋本 諒哉,丸山 紀史,山口 匡
    • Organizer
      日本音響学会2021年春季研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 超音波バイオマーカーの確立に向けた関連研究動向2020

    • Author(s)
      山口 匡
    • Organizer
      日本音響学会2021年春季研究発表会
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アニュラアレイによる後方散乱特性解析の臨床応用へ向けた安定性評価2020

    • Author(s)
      西東 若菜,大村 眞朗,Ketterling Jeffrey,山口 匡
    • Organizer
      日本音響学会2021年春季研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ラット肝臓の組織構造と後方散乱特性の関係性の基礎検討2020

    • Author(s)
      八木 風音,西東 若菜,大村 眞朗,平田 慎之介,山口 匡
    • Organizer
      日本音響学会2021年春季研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] FDTDを用いた脂肪肝の組織構造とせん断波速度評価に与える影響の検証2020

    • Author(s)
      伊藤 大貴,大栗 拓真,吉田 憲司,山口 匡
    • Organizer
      日本超音波医学会第93回学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Shear Wave Elastographyの安定性についての考察2020

    • Author(s)
      山口 匡
    • Organizer
      日本超音波医学会第93回学術集会
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] リンパ節転移モデルマウスの3次元in vivo超音波定量評価の基礎検討2020

    • Author(s)
      大村 眞朗,永松 大輝,小玉 哲也,佐藤 悠佑,吉田 憲司,山口 匡
    • Organizer
      日本超音波医学会第93回学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Effect of Acoustic Impedance Distribution and Histopathological Structure on Backscatter Coefficient Analysis of Skin Tissue2019

    • Author(s)
      Masaaki Omura, Kenji Yoshida, Shinsuke Akita, Tadashi Yamaguchi
    • Organizer
      The 40th Symposium on UltraSonic Electronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of Relationship between Liver Pathological Structure and Speed of Sound of Longitudinal Wave2019

    • Author(s)
      Takuya Ogawa, Kenji Yoshida, Takashi Ohnishi, Hideaki Haneishi, Tadashi Yamaguchi
    • Organizer
      The 40th Symposium on UltraSonic Electronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] vivo Application of Fatty Liver Progression Assessment Method by Double Nakagami Model:2019

    • Author(s)
      Yusuke Sato, Kazuki Tamura, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 40th Symposium on UltraSonic Electronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of Backscatter Coefficient Evaluation Method on Conventional Ultrasound Scanner?Comparison with Single-Element Transducer2019

    • Author(s)
      Kazuki Tamura, Jonathan Mamou, Kenji Yoshida, Hiroyuki Hachiya, Tadashi Yamaguchi
    • Organizer
      The 40th Symposium on UltraSonic Electronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comprehensive scattering characteristics analysis of soft tissues with a high-frequency annular array2019

    • Author(s)
      Takeru Mizoguchi, Kenji Yoshida, Jonathan Mamou, Jeffrey A. Ketterling, Tadashi Yamaguchi
    • Organizer
      The 40th Symposium on UltraSonic Electronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparison of different sound field correction methodson backscatter coefficient analysis2019

    • Author(s)
      Kazuya Ito, Masaaki Omura, Takuma Oguri, Takeru Mizoguchi, Atsuko Yamada, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 40th Symposium on UltraSonic Electronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Verification of influence of tissue structure on shear wave velocity evaluation2019

    • Author(s)
      Daiki Ito, Atsuko yamada, Takuma Oguri, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      The 40th Symposium on UltraSonic Electronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Verification of influence of push pulse irradiation condition on shear wave propagation by actualmeasurement of phantoms2019

    • Author(s)
      Minoru Ito, Daiki Ito, Masashi Usumura, Takuma Oguri, Kenji Yoshida, Mikio Suga, Tadashi Yamaguchi
    • Organizer
      The 40th Symposium on UltraSonic Electronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Backscattering coefficient analysis considering micro structure of liver tissue2019

    • Author(s)
      Atsuko Yamada, Kazuki Tamura, Emilie Franceschini, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      2019 IS-3T-in-3A
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Relationship between accuracy of speed of sound analysis due to surface asperity of measurement target2019

    • Author(s)
      Toshiki Matsuzaki, Atsuko Yamada, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      2019 IS-3T-in-3A
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Verification of instability factors of tissue structure on shear wave velocity by FDTD2019

    • Author(s)
      Daiki Ito, Takuma Oguri, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      2019 IS-3T-in-3A
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Macroscale Backscattering Analysis for Characterization of Skin Lymphedema Considering Microscale Acoustic and Histopathological Properties2019

    • Author(s)
      Masaaki Omura, Kenji Yoshida, Shinsuke Akita, Tadashi Yamaguchi
    • Organizer
      IEEE International Ultrasonics Symposium 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Application of ultrafast plane wave imaging for high-temporal-resolution analysis of backscattering and fluid mechanics2019

    • Author(s)
      Masaaki Omura, Takuro Ishii, Alfred Yu, Kenji Yoshida, Tadashi Yamaguchi
    • Organizer
      IEEE International Ultrasonics Symposium 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comprehensive Scattering Characteristics Analysis of Rat Livers with High-Frequency Annular Array2019

    • Author(s)
      akeru Mizoguchi, Kenji Yoshida, Jonathan Mamou,Jeffrey A. Ketterling and Tadashi Yamaguchi
    • Organizer
      IEEE International Ultrasonics Symposium 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] リンパ浮腫の真皮および皮下組織における後方散乱特性評価の基礎検討2019

    • Author(s)
      西東若菜,大村眞朗,秋田新介,吉田憲司,山口匡
    • Organizer
      日本音響学会2020年春季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 媒質の散乱体構造と散乱・減衰・振幅包絡特性の関係性の検討2019

    • Author(s)
      伊能舞,大村眞朗,溝口岳,吉田憲司,山口匡
    • Organizer
      日本音響学会2020年春季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] マウス担がんリンパ節における音響特性の評価2019

    • Author(s)
      野口和馬,小川拓朗,吉田憲司,大西峻,羽石秀昭,小玉哲也,山口匡
    • Organizer
      日本音響学会2020年春季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] FDTD を用いた生体組織構造とせん断波伝搬速度評価精度の関係性の検討2019

    • Author(s)
      伊藤大貴,大栗拓真,神山直久,吉田憲司,山口匡
    • Organizer
      日本音響学会2020年春季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] アニュラアレイでの振幅包絡特性解析におけるコヒーレンス因子の影響2019

    • Author(s)
      溝口岳,大村眞朗,Jeffrey Ketterling,吉田憲司,山口匡
    • Organizer
      日本音響学会2020年春季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Double-Nakagami モデルによる振幅特性評価の精度検証2019

    • Author(s)
      佐藤悠佑,田村和輝,大村眞明,吉田憲司,山口匡
    • Organizer
      日本音響学会2020年春季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] びまん性疾患の肝臓における組織構造と音速および音響インピーダンスの関係性の評価2019

    • Author(s)
      橋本諒哉,伊藤一陽,吉田憲司,山口匡
    • Organizer
      日本音響学会2020年春季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 皮膚組織の後方散乱係数解析における音響特性・組織構造の関連性評価2019

    • Author(s)
      大村眞朗,吉田憲司,秋田新介,山口匡
    • Organizer
      日本音響学会2020年春季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 音響インピーダンスを考慮した皮膚組織の後方散乱係数評価2019

    • Author(s)
      大村眞朗,吉田憲司,秋田新介,山口匡
    • Organizer
      日本音響学会2019年秋季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] マルチスケール音速解析による肝臓組織の構造特性評価2019

    • Author(s)
      小川拓朗,吉田憲司,松本大輝,大西峻,羽石秀昭,山口匡
    • Organizer
      日本音響学会2019年秋季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] アニュラアレイによる生体組織の後方散乱特性評価の高精度化2019

    • Author(s)
      溝口岳,田村和輝,Jonathan Mamou,Jeffrey Ketterling,吉田憲司,山口匡
    • Organizer
      日本音響学会2019年秋季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] FDTD によるShear wave elastography の不安定要因の検証2019

    • Author(s)
      伊藤大貴,大栗拓真,山田敦子,吉田憲司,山口匡
    • Organizer
      第38回日本医用画像工学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 肝臓内の脂肪酸組成に着目した NASH 肝の音響特性評価2019

    • Author(s)
      伊藤一陽,丸山紀史,橋本諒哉,吉田憲司,山口匡
    • Organizer
      日本超音波医学会第92回学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Shear Wave Elastography の基本原理と多様性2019

    • Author(s)
      山口匡
    • Organizer
      日本超音波医学会第92回学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 生体組織の散乱特性評価の現状と課題2019

    • Author(s)
      山口匡
    • Organizer
      日本超音波医学会第92回学術集会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 生体組織の散乱特性評価への応用2019

    • Author(s)
      山口匡
    • Organizer
      日本超音波医学会第92回学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 超音波の減衰による脂肪化定量の理論的背景2019

    • Author(s)
      山口匡
    • Organizer
      日本超音波医学会第92回学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 散乱特性の高時間分解能・高精度解析に向けた平面波イメージングの応用2019

    • Author(s)
      大村眞朗,石井琢郎 ,Alfred YU,吉田憲司,山口匡
    • Organizer
      日本超音波医学会第92回学術集会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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