Non-contact measurement of cardiac mechanical phenomena using three-dimensional image measurement and its clinical application

• Project/Area Number: 16K08977
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Laboratory medicine
• Research Institution: Tokyo Women's Medical University
• Principal Investigator: Shiga Tsuyoshi 東京女子医科大学, 医学部, 客員教授 (00277211)
• Co-Investigator(Kenkyū-buntansha): 鈴木 敦 東京女子医科大学, 医学部, 講師 (00625626) ; 青木 広宙 公立千歳科学技術大学, 理工学部, 准教授 (60380193)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 心臓 / 機械現象 / 非接触 / 計測システム / 循環器 / 生理機能検査 / 情報工学 / 医工学

Outline of Final Research Achievements

We developed a non-contact heartbeat measurement system that can see the movement of the heart without directly touching the body. This system obtains the three-dimensional information about the shape of the human chest by projecting a laser light onto chest, and can measure minute changes in chest shape associated with heartbeat at a high sensitivity. Next, non-contact heartbeat measurement using this system was performed on 177 patients with cardiovascular diseases in clinical study. As a result, we confirmed that the patient's heart movement was different in the images obtained from this system between patients with normal cardiac function and patients with impaired cardiac function.

Academic Significance and Societal Importance of the Research Achievements

今回開発した非接触心拍計測システムは、患者の身体に接することなく心臓の動きを可視化できる方法である。従来心臓の動きをみるためには超音波や造影カテーテル、MRIといった特赦な装置を必要し、誰もが簡単に繰り返し検査できるものではなかった。本システムを用いて臨床現場で心臓の収縮拡張様式を簡便に観察することができれば、病態の詳細な把握のみならず、治療評価にもつながり新たな情報として循環器医療に変化をもたらす可能性がある。

Research Products

• [Presentation] ハイブリッドステレオ法による非接触心拍計測 (2019)
  • Author(s): 青木 広宙，志賀 剛，鈴木 敦
  • Organizer: ビジョン技術の実利用ワークショップ2019
• [Presentation] Non-contact Heartbeat Measurement by Hybrid Method of Passive Stereo and Active Stereo (2019)
  • Author(s): Hirooki Aoki, Tsuyoshi Shiga, Atsushi Suzuki, Koichi Takeuchi
  • Organizer: 2019 IEEE 1st Global Conference on Life Sciences and Technologies
  • Int'l Joint Research
• [Presentation] Attempt to Visualize Cardiac Motion on Body Surface using Active Stereoscopic Depth Camera (2019)
  • Author(s): Hirooki Aoki, Tsuyoshi Shiga, Atsushi Suzuki
  • Organizer: 9th International Conference on Biomedical Engineering and Technology (ICBET 2019)
  • Int'l Joint Research
• [Presentation] Study on Non-contact Heart Beat Measurement Method by Using Depth Sensor (2018)
  • Author(s): Hirooki Aoki, Atsushi Suzuki, Tsuyoshi Shiga
  • Organizer: 2018 World Congress on Medical Physics and Biomedical Engineering
  • Int'l Joint Research
• [Presentation] Depth Sensor Applications: Haptic User Interface and Non-contact Biosignal Measurement (2018)
  • Author(s): Hirooki Aoki
  • Organizer: 2018 International Conference for Leading and Young Computer Scientists (IC-LYCS 2018)
  • Int'l Joint Research / Invited
• [Presentation] 三次元画像センサによる心臓機械現象モニタリングシステム (2017)
  • Author(s): 青木広宙
  • Organizer: 動的画像処理実利用化ワークショップ2017
  • Place of Presentation: くにびきメッセ（島根県松江市）
  • Year and Date: 2017-03-10
• [Presentation] Depthセンサを用いた非接触生体信号計測に関する検討 (2017)
  • Author(s): 青木広宙，鈴木敦，志賀剛，仲村秀俊
  • Organizer: 電気学会 知覚情報／次世代産業システム合同研究会