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Ultrasonic visualization of propagation of electrical excitation causing contraction by measuring human myocardial response

Research Project

Project/Area Number 19K22943
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 90:Biomedical engineering and related fields
Research InstitutionTohoku University

Principal Investigator

Kanai Hiroshi  東北大学, 工学研究科, 教授 (10185895)

Co-Investigator(Kenkyū-buntansha) 荒川 元孝  東北大学, 医工学研究科, 准教授 (00333865)
森 翔平  東北大学, 工学研究科, 助教 (50815149)
高瀬 圭  東北大学, 医学系研究科, 教授 (60361094)
Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords医用超音波計測 / 電気的興奮の伝導経路 / 心臓収縮 / 心筋応答 / 虚血状態 / 非侵襲的早期診断 / 超音波工学 / 位相差トラッキング法 / 医用超音波
Outline of Research at the Start

心臓の収縮は,電気的興奮が洞房結節で発し,心臓全体の心筋に伝導して始まる。もし,これら心筋興奮の伝導経路と電気的刺激到来後の心筋収縮の伝搬速度を非侵襲的に可視化できれば,心不全や心筋梗塞など重篤な心疾患において心臓壁の心筋細胞各々の画期的診断が可能となる。
本研究では,①心臓壁内での電気的興奮の伝導経路,②電気的興奮に伴う心筋の応答性・伝搬速度に関する断層像,を可視化する全く新しい超音波計測法を開発し,心筋特性の診断法の確立を目指す。

Outline of Final Research Achievements

In the early stage of ischemic heart disease, the ischemic region can avoid myocardial necrosis by rapidly reperfusing the coronary arteries. Therefore, rapid identification of the ischemic region is important, and local and highly accurate velocity estimation is the key to the evaluation of local myocardial contraction characteristics using ultrasound. In this study, we analyzed the received ultrasonic signal at multiple frequencies and proposed a speed estimation method using ultrasonic phase differences at multiple different frequencies. This proposed method can reduce the effects of attenuation and interference as described above without performing spatial averaging, and local velocity estimation is possible. The proposed method can estimate the velocity with a shorter window width than the conventional method, and can measure the local velocity distribution and the local myocardial strain rate.

Academic Significance and Societal Importance of the Research Achievements

従来技術では不得意とされていた「心臓壁の高速な動きのトラッキング」と「心臓壁の厚み変化の評価」が可能となった。これらから心臓収縮を起こす電気的興奮の伝導に伴う生体ヒト心筋の収縮応答性の非侵襲的可視化が達成されたものと言える。提案した複数の異なる周波数における超音波位相差を用いた速度推定法による,局所的な心筋ストレインレート計測を行うことで,心臓壁の局所心筋収縮特性と電気機械的特性の関係を明らかにできる可能性がある。これにより虚血性心疾患の初期段階である虚血部は,速やかに冠動脈を再灌流させることで心筋の壊死を回避でき,また心臓生理学と心臓疾患に関する学術体系が格段に広がることが期待できる。

Report

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

    (40 results)

All 2022 2021 2020 2019 Other

All Journal Article (23 results) (of which Peer Reviewed: 23 results,  Open Access: 6 results) Presentation (14 results) (of which Int'l Joint Research: 1 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Strain Rate Distribution in Layered Myocardium Measured Using Local Velocity Estimator with Multifrequency Phase Differences2021

    • Author(s)
      Obara Yu、Mori Shohei、Arakawa Mototaka、Kanai Hiroshi
    • Journal Title

      Ultrasound in Medicine & Biology

      Volume: 47 Issue: 9 Pages: 2768-2773

    • DOI

      10.1016/j.ultrasmedbio.2021.05.021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low-complexity generalized coherence factor estimated from binarized signals in ultrasound beamforming2021

    • Author(s)
      Hisatsu Masanori、Mori Shohei、Arakawa Mototaka、Kanai Hiroshi
    • Journal Title

      Journal of Medical Ultrasonics

      Volume: 48 Issue: 3 Pages: 259-272

    • DOI

      10.1007/s10396-021-01089-z

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Estimation error in sound velocity depending on size of target scatterer2021

    • Author(s)
      Nakayama Aoi、Mori Shohei、Arakawa Mototaka、Kanai Hiroshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SD Pages: 1-6

    • DOI

      10.35848/1347-4065/abf39e

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A study on differentiation of depiction between scatterer and reflector to assist epidural anesthesia by ultrasound2021

    • Author(s)
      Hashimoto Takumi、Mori Shohei、Arakawa Mototaka、Onishi Eiko、Yamauchi Masanori、Kanai Hiroshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SD Pages: 1-10

    • DOI

      10.35848/1347-4065/abf4a3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stabilization of red blood cell aggregation evaluation using short-axis view of vein of ultrasound2021

    • Author(s)
      Fukase Akiyo、Higashiyama Kyohei、Mori Shohei、Arakawa Mototaka、Yashiro Satoshi、Ishigaki Yasushi、Kanai Hiroshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SD Pages: 1-4

    • DOI

      10.35848/1347-4065/abf3d5

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Accuracy verification in ultrasonic elasticity measurement within intima-media complex visible range using phantom experimental system2021

    • Author(s)
      Akiyama Seira、Mori Shohei、Arakawa Mototaka、Kanai Hiroshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SD Pages: 1-7

    • DOI

      10.35848/1347-4065/abef0d

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation of error factors depending on ultrasonic transmitted beamwidth in measurement of myocardial minute velocity2021

    • Author(s)
      Sugahara Kana、Mori Shohei、Arakawa Mototaka、Kanai Hiroshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SD Pages: 1-3

    • DOI

      10.35848/1347-4065/abef0e

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multifrequency Phased Tracking Method for Estimating Velocity in Heart Wall2021

    • Author(s)
      Yu Obara, Shohei Mori, Mototaka Arakawa, and Hiroshi Kanai
    • Journal Title

      Ultrasound in Medicine & Biology

      Volume: 47 Issue: 4 Pages: 1077-1088

    • DOI

      10.1016/j.ultrasmedbio.2020.12.011

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Low-intensity pulsed ultrasound therapy promotes recovery from stroke by enhancing angio-neurogenesis in mice in vivo2021

    • Author(s)
      Ichijo Sadamitsu、Shindo Tomohiko、Eguchi Kumiko、Monma Yuto、Nakata Takashi、Morisue Yoshihiko、Kanai Hiroshi、Osumi Noriko、Yasuda Satoshi、Shimokawa Hiroaki
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 1-11

    • DOI

      10.1038/s41598-021-84473-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Estimation of viscoelasticity of radial artery during flow-mediated dilatation using a single ultrasound probe based on blood pressure measurement via pulse transit time method2021

    • Author(s)
      Yuto Shoji, Shohei Mori, Mototaka Arakawa, Shigeo Ohba, Kazuto Kobayashi, and Hiroshi Kanai
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SD Pages: SDDE03-SDDE03

    • DOI

      10.35848/1347-4065/abef0b

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] High temporal resolution measurement of propagation pattern of myocardial stretching in left ventricle2021

    • Author(s)
      KUROKAWA Takafumi、NAKAJIMA Hiroyuki、TAKAHASHI Shinichiro、TANAKA Motonao、KANAI Hiroshi、SAIJO Yoshifumi
    • Journal Title

      Choonpa Igaku

      Volume: 48 Issue: 2 Pages: 73-80

    • DOI

      10.3179/jjmu.JJMU.A.177

    • NAID

      130007996959

    • ISSN
      1346-1176, 1881-9311
    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Evaluation method of the degree of red blood cell aggregation considering ultrasonic propagation attenuation by analyzing ultrasonic backscattering properties2021

    • Author(s)
      Kanta Nagasawa, Akiyo Fukase, Shohei Mori, Mototaka Arakawa, Satoshi Yashiro, Yasushi Ishigaki, and Hiroshi Kanai
    • Journal Title

      Journal of Medical Ultrasonics

      Volume: 48 Issue: 1 Pages: 3-12

    • DOI

      10.1007/s10396-020-01065-z

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Measurement of propagation of local and minute contractile response in layered myocardium2021

    • Author(s)
      Obara Yu、Mori Shohei、Arakawa Mototaka、Kanai Hiroshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SD Pages: SDDE02-SDDE02

    • DOI

      10.35848/1347-4065/abeabf

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Feasibility of Non-invasive Pulse Pressure Measurement Using the Phased-Tracking Method2020

    • Author(s)
      Kobori Shusaku、Murotsuki Jun、Watanabe Shimpei、Hasegawa Hideyuki、Kanai Hiroshi、Yaegashi Nobuo、Saito Masatoshi
    • Journal Title

      Ultrasound in Medicine & Biology

      Volume: 46 Issue: 10 Pages: 2711-2716

    • DOI

      10.1016/j.ultrasmedbio.2020.06.019

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ultrasound measurement of fetal arterial pulse pressure using phased‐tracking methods: A phantom study and clinical experience with antenatal corticosteroid therapy2020

    • Author(s)
      Muromoto Jin、Murotsuki Jun、Miyashita Susumu、Hasegawa Hideyuki、Taki Hirofumi、Kanai Hiroshi、Yaegashi Nobuo
    • Journal Title

      Journal of Obstetrics and Gynaecology Research

      Volume: 46 Issue: 10 Pages: 1994-2001

    • DOI

      10.1111/jog.14402

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Measurement of viscoelasticity of anisotropic viscoelastic phantom by dual ultrasound excitation2020

    • Author(s)
      Kawamura Hibiki、Mori Shohei、Arakawa Mototaka、Kanai Hiroshi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SK Pages: SKKE24-SKKE24

    • DOI

      10.35848/1347-4065/ab8bc0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Generalized coherence factor estimated from real signals in ultrasound beamforming2020

    • Author(s)
      Hisatsu Masanori、Mori Shohei、Arakawa Mototaka、Kanai Hiroshi
    • Journal Title

      Journal of Medical Ultrasonics

      Volume: 47 Issue: 2 Pages: 179-192

    • DOI

      10.1007/s10396-019-01004-7

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Estimation of viscoelasticity of radial artery via simultaneous measurement of changes in pressure and diameter using a single ultrasound probe2020

    • Author(s)
      Takumi Saito, Shohei Mori, Mototaka Arakawa, Shigeo Ohba, Kazuto Kobayashi, and Hiroshi Kanai
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SK Pages: SKKE04-SKKE04

    • DOI

      10.35848/1347-4065/ab7f1c

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Discrimination of thoracic spine from muscle based on their difference in ultrasound reflection and scattering characteristics2020

    • Author(s)
      Tomohiro Yokoyama, Shohei Mori, Mototaka Arakawa, Eiko Onishi, Masanori Yamauchi, and Hiroshi Kanai
    • Journal Title

      Journal of Medical Ultrasonics

      Volume: 47 Issue: 1 Pages: 3-11

    • DOI

      10.1007/s10396-019-00964-0

    • NAID

      130008115958

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of intraventricular vortex in left ventricular ejection elucidated by echodynamography2019

    • Author(s)
      Motonao Tanaka, Tsuguya Sakamoto, Yoshifumi Saijo, Yoshiaki Katahira, Shigeo Sugawara, Hiroyuki Nakajima, Takafumi Kurokawa, and Hiroshi Kanai
    • Journal Title

      Journal of Medical Ultrasonics

      Volume: 46 Issue: 4 Pages: 413-423

    • DOI

      10.1007/s10396-019-00943-5

    • NAID

      130007967687

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A new evaluation method for dependence of width of transmitted waves on accuracy in multipoint simultaneous ultrasonic measurements of cardiac wall vibration waveform2019

    • Author(s)
      Naoya Furusawa, Shohei Mori, Mototaka Arakawa, and Hiroshi Kanai
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Issue: SG Pages: 1-6

    • DOI

      10.7567/1347-4065/ab1a30

    • NAID

      210000156563

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Local two-dimensional distribution of propagation speed of myocardial contraction for ultrasonic visualization of contraction propagation2019

    • Author(s)
      Akane Hayashi, Shohei Mori, Mototaka Arakawa, and Hiroshi Kanai
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Issue: SG Pages: 1-7

    • DOI

      10.7567/1347-4065/ab0d0b

    • NAID

      210000156358

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of an ultrasonic probe to measure both radial arterial pressure and diameter change at the same position for early diagnosis of vascular endothelial function: Preliminary study2019

    • Author(s)
      Mototaka Arakawa, Takumi Saito, Shohei Mori, Shigeo Ohba, Kazuto Kobayashi, and Hiroshi Kanai
    • Journal Title

      Sensors & Actuators A: Physical

      Volume: 297 Pages: 1-4

    • DOI

      10.1016/j.sna.2019.07.011

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 心筋層の局所的な厚み変化計測における超音波位相差を用いた速度推定法の窓長の最適化2021

    • Author(s)
      小原 優, 森 翔平, 高野真澄, 荒川元孝, 金井 浩
    • Organizer
      第42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
      2021 Annual Research Report
  • [Presentation] 1 心周期における多層構造を持つ心臓壁内の心筋伸縮の超音波位相差を用いた局所的な計測2021

    • Author(s)
      小原 優, 森 翔平, 高野真澄, 荒川元孝, 金井 浩
    • Organizer
      日本超音波医学会第62回東北地方会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 多周波数における超音波位相差を用いた速度推定法の検出最大速度と局所性の関係2021

    • Author(s)
      小原 優, 森 翔平, 荒川元孝, 金井 浩
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 多周波位相差トラッキング法による心筋ストレインレート計測2021

    • Author(s)
      小原 ,優 森 翔平, 荒川元孝, 金井 浩
    • Organizer
      日本超音波医学会第94回学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 心筋虚血前後の心室中隔壁速度波形の変化2021

    • Author(s)
      金井 浩, 小原 優, 森 翔平, 荒川元孝, 山本裕朗, 諸沢 薦, 下川宏明, 高野真澄
    • Organizer
      日本超音波医学会第94回学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 心筋の微小速度計測における超音波計測精度の送信ビーム幅依存性2021

    • Author(s)
      菅原佳奈, 原 魁星, 森 翔平, 荒川元孝, 金井 浩
    • Organizer
      日本超音波医学会第94回学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 心筋虚血後の数秒間における心室中隔壁内の速度波形の変化の超音波による検出2020

    • Author(s)
      金井 浩, 小原 優, 荻野智司, 森 翔平, 荒川元孝, 山本裕朗, 諸沢 薦, 下川宏明, 高野真澄
    • Organizer
      日本超音波医学会第60回東北地方会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 電気的興奮の超音波計測と,前駆出期の収縮伝播速度が貫壁方向と縦方向で異なること2020

    • Author(s)
      金井 浩, 森 翔平, 荒川元孝
    • Organizer
      日本超音波医学会第93回学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 多周波数における超音波位相差を用いた心臓壁の局所的な微小速度推定2020

    • Author(s)
      小原 優, 森 翔平, 荒川元孝, 金井 浩
    • Organizer
      日本超音波医学会第93回学術集会,
    • Related Report
      2020 Research-status Report
  • [Presentation] Correlation between Red Blood Cell Aggregation and Blood Glucose Level2019

    • Author(s)
      Akiyo Fukase, Kanta Nagasawa, Shohei Mori, Mototaka Arakawa, Satoshi Yashiro, Yasushi Ishigaki, Hiroshi Kanai
    • Organizer
      2019 IEEE International Ultrasonics Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Accurate Estimation Method of Arterial Wall Movement in Longitudinal Direction2019

    • Author(s)
      Koji Iwamori, Shohei Mori, Mototaka Arakawa, Hiroshi Kanai
    • Organizer
      2019 IEEE International Ultrasonics Symposium
    • Related Report
      2019 Research-status Report
  • [Presentation] Speeds of Contraction Responses Propagating Along Septum at Pre-Ejection Period Are Different between Radial and Longitudinal2019

    • Author(s)
      Hiroshi Kanai, Shohei Mori, Mototaka Arakawa
    • Organizer
      2019 IEEE International Ultrasonics Symposium
    • Related Report
      2019 Research-status Report
  • [Presentation] 超音波の位相を用いた心臓壁における微小速度推定法の高精度化2019

    • Author(s)
      小原 優, 森 翔平, 荒川元孝, 金井 浩
    • Organizer
      第97回超音波エレクトロニクス研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 心室中隔壁の前駆出期での収縮応答の伝播速度が,貫壁方向と縦方向で異なること2019

    • Author(s)
      金井 浩, 森 翔平, 荒川元孝
    • Organizer
      日本超音波医学会第58回東北地方会学術集会
    • Related Report
      2019 Research-status Report
  • [Book] 生体組織の超音波計測2022

    • Author(s)
      日本音響学会、松川 真美、山口 匡、長谷川 英之、斎藤 繁実、西條 芳文、細川 篤、長谷 芳樹、蜂屋 弘之、神山 直久、吉田 憲司、金井 浩、椎名 毅、山越 芳樹、梅村 晋一郎、工藤 信樹
    • Total Pages
      244
    • Publisher
      コロナ社
    • ISBN
      9784339013436
    • Related Report
      2021 Annual Research Report
  • [Remarks] 東北大学大学院工学研究科 電子工学専攻 金井・荒川研究室

    • Related Report
      2021 Annual Research Report
  • [Remarks] 東北大学 金井・荒川研究室 論文

    • URL

      http://www.ecei.tohoku.ac.jp/~hkanai/publication.html#articles

    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-07-04   Modified: 2023-01-30  

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