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Development of Video Pulse Wave Extraction Method and Evaluation of Blood Pressure and Vascular Characteristics by Video Plethysmography

Research Project

Project/Area Number 20K12617
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionFukushima University

Principal Investigator

Tanaka Akira  福島大学, 共生システム理工学類, 教授 (10323057)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords映像脈波 / カフレス血圧推定 / 血行動態解析 / 非接触血圧推定 / 脈波伝播速度 / 血圧推定 / 周期成分分析 / 脈波伝播 / 心拍変動解析
Outline of Research at the Start

映像中の皮膚の色変化の解析によって脈波成分(映像脈波)が抽出可能であり,そこから心拍数や脈波伝播時間などの生理指標を得る手法が提案されている.本研究では,接触式センサに迫る精度での脈波抽出法の開発,多点計測を活かした瞬時心拍数の精度の向上,映像脈波の利点を活かした血行動態指標の創出を目的とする.さらに,非接触血圧推定の新しい手法について提案するとともに,これらの健康維持や臨床への応用を目指す.

Outline of Final Research Achievements

In this study, we proposed a new method to calculate the video pulse wave by repeatedly applying periodic component analysis (PiCA) and updating the heartbeat interval.The extraction accuracy of the video pulse wave was improved compared to conventional methods.
We proposed a cuffless blood pressure estimation method using hand elevation.In a validation using a contact sensor, diastolic blood pressure could be estimated with an error of 5 mmHg or less. Furthermore, the verification using video pulse wave showed that the estimation was possible with an error of less than 10 mmHg. The possibility of complete non-contact blood pressure estimation was demonstrated. We have applied for a patent for this method.
The feature values of the video pulse wave showed hemodynamic changes due to facial massage and differences in the degree of facial congestion caused by changes in body position. The possibility of two-dimensional evaluation of hemodynamics by video pulse wave was demonstrated.

Academic Significance and Societal Importance of the Research Achievements

映像脈波の抽出精度が向上することで、接触式の脈波センサの代わりとして利用できる可能性がある。これは、遠隔医療やセンサ装着が困難な新生児などの計測に大きく寄与すると期待できる。また、映像脈波は多点同時計測が可能であるため、一つのカメラで複数人の計測が可能なことや2次元的な脈波解析ができることなど、新たな生理計測法となる可能性がある。さらに、過去の映像、TVやオンライン会議の映像などからも映像脈波が得られるため、医療だけでなく様々な分野への応用が期待できる。
提案したカフレス血圧推定法は、従来法よりも個人差や再現性の点で優れている可能性があるだけでなく、非接触化が可能でリモート計測にも応用できる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (11 results)

All 2022 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Basic Approach to Estimation of Blood Oxygen Saturation Using an RGB Color Camera without Infrared Light2022

    • Author(s)
      Yoshizawa Makoto、Sugita Norihiro、Tanaka Akira、Togashi Atsushi、Kaji Isao、Yambe Tomoyuki
    • Journal Title

      2022 IEEE 4th Global Conference on Life Sciences and Technology(LifeTech)

      Volume: 2022 Pages: 68-71

    • DOI

      10.1109/lifetech53646.2022.9754752

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 周期成分分析を用いた映像脈波抽出と非接触末梢血行動態解析の可能性2020

    • Author(s)
      田中 明
    • Journal Title

      光技術コンタクト

      Volume: 58 Pages: 9-14

    • Related Report
      2020 Research-status Report
  • [Presentation] Basic Approach to Estimation of Blood Oxygen Saturation Using an RGB Color Camera without Infrared Light2022

    • Author(s)
      M. Yoshizawa, N. Sugita, A. Tanaka, A. Togashi, I. Kaji and T. Yambe
    • Organizer
      4th IEEE Global Conference on Life Sciences and Technologies (LifeTech)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Basic Approach to Estimation of Blood Oxygen Saturation Using an RGB Color Camera without Infrared Light2022

    • Author(s)
      Makoto Yoshizawa, Norihiro Sugita, Akira Tanaka, Atsushi Togashi, Isao Kaji
    • Organizer
      IEEE 4th Global Conference on Life Sciences and Technologies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 手の昇降を利用した末梢の脈波による動脈の脈波伝播速度の推定2021

    • Author(s)
      内藤勇成,田中 明,吉澤 誠
    • Organizer
      第60回日本生体医工学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Remote, Non-Contact and Continuous Extraction of Multiple Peoples’ Autonomic Nervous System Indices from One Fish-Eye Camera2021

    • Author(s)
      Makoto Yoshizawa, Norihiro Sugita, Akira Tanaka, Noriyasu Homma, Emi Yuda, Tomoyuki Yambe
    • Organizer
      International Display Workshops 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 指尖容積脈波における様々な脈波解析方法の映像脈波への適用と有用性の評価2020

    • Author(s)
      内藤 勇成、田中 明、熊谷 岬、吉澤 誠
    • Organizer
      第59回日本生体医工学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 周期成分分析を用いた脈波抽出と末梢血行動態のウェア“レス”モニタリング2020

    • Author(s)
      田中 明、熊谷 岬、吉澤 誠
    • Organizer
      第59回日本生体医工学会大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 映像脈波の形状と伝播速度の変化を利用した末梢血行動態の評価2020

    • Author(s)
      熊谷岬,田中 明,吉澤 誠
    • Organizer
      第59回日本生体医工学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] ウェア“レス”モニタリングとしての映像脈波の可能性と課題2020

    • Author(s)
      吉澤 誠、杉田 典大、湯田 恵美、田中 明、本間 経康、山家 智之
    • Organizer
      第59回日本生体医工学会大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Patent(Industrial Property Rights)] 血圧推定装置、血圧推定方法、およびプログラム2022

    • Inventor(s)
      田中 明
    • Industrial Property Rights Holder
      田中 明
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-095209
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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