Study on non-contact imaging of vascular compliance

• Project/Area Number: 26820161
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Measurement engineering
• Research Institution: Tokyo University of Science (2015); Nippon Sport Science University (2014)
• Principal Investigator: NAKANO KAZUYA 東京理科大学, 理学部, 助教 (80713833)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 血管コンプライアンス / 静脈コンプライアンス / 脈波伝播速度 / 非接触計測 / 光伝播モンテカルロ法 / RGBカメラ / 光伝播モンテカルロシミュレーション / 生体医用光学 / 生体計測

Outline of Final Research Achievements

Recently, it is said that there is the relationship between human’s venous compliance, which corresponds to the ability of veins to stretch, and venous thrombosis. Conventional strain-gauge plethysmograph (SPG) often suffers from errors due to limb movement. Thus, we proposed the non-contact and non-invasive imaging of venous compliance using RGB camera and, from the resulting images, observed the spatial distribution of venous compliance, which correlates with the distribution of veins.
Pulse wave velocity (PWV) has been used as the evaluation index of arteriosclerosis and is on the order of m/s. Currently, tonometry is the conventional methods to measure PWV. However, The direction or pressing force of tonometry sensor affects the measurement of pulse wave. Therefore, the non-contact measurement system based on digital color images of human skin was proposed. The PWV measured using the proposed system is in the order of m/s. The results demonstrate the feasibility of this method.

Research Products

• [Journal Article] Non-contact imaging of venous compliance in humans using an RGB camera (2015)
  • Author(s): K. Nakano, R. Sato, A. Hoshi, R. Matsuda, H. Suzuki, and I. Nishidate
  • Journal Title: Optical Review Volume: 22 Issue: 2 Pages: 335-341
  • DOI: 10.1007/s10043-015-0041-5
  • Peer Reviewed
• [Presentation] Non-contact measurement of pulse wave velocity using RGB cameras (2016)
  • Author(s): Kazuya Nakano, Yuta Aoki, Ryota Satoh, Akira Hoshi, Hiroyuki Suzuki, and Izumi Nishidate.
  • Organizer: 2016 SPIE PHOTONICS WEST BiOS
  • Place of Presentation: The Moscone Center San Francisco, California, USA
  • Year and Date: 2016-02-13
  • Int'l Joint Research
• [Presentation] 非接触計測による脈波伝播速度の評価 (2015)
  • Author(s): 中野和也，青木佑太，星輝，佐藤遼太，鈴木裕之，西舘泉
  • Organizer: 第56回光波センシング技術研究講演会
  • Place of Presentation: 東京理科大学 神楽坂キャンパス 森戸記念館（東京都新宿区）
  • Year and Date: 2015-12-08
• [Presentation] ディジタルカラー動画像に基づいた脈波伝播速度の非接触計測 (2015)
  • Author(s): 中野和也，青木佑太，佐藤遼太，星輝，鈴木裕之，西舘泉
  • Organizer: 医用光学・分光学系合同研究会 Medical Optics & Spectroscopy 2015, 医用分光学研究会
  • Place of Presentation: ホテルグランドヒル市ヶ谷（東京都新宿区）
  • Year and Date: 2015-12-03
• [Presentation] RGBカメラを用いた脈波伝播速度の非接触計測システム (2015)
  • Author(s): 中野和也，青木佑太，佐藤遼太，星輝，鈴木裕之，西舘泉
  • Organizer: 日本光学会年次学術講演会 Optics & Photonics Japan 2015
  • Place of Presentation: 筑波大学東京キャンパス文京校舎（東京都文京区）
  • Year and Date: 2015-10-28
• [Presentation] Non-contact visualization of venouos compliance in human using red, green, blue images. (2015)
  • Author(s): Kazuya Nakano, Ryota Satoh, Akira Hoshi, Yuta Aoki, Hiroyuki Suzuki, and Izumi Nishidate.
  • Organizer: The 5th Korea-Japan International Workshop on Digital Holography and International Photonics (DHIP 2015)
  • Place of Presentation: KIST, Gangneung, Korea
  • Year and Date: 2015-09-17
  • Int'l Joint Research / Invited
• [Presentation] RGBカメラを用いた静脈コンプライアンスの非接触イメージング (2015)
  • Author(s): 中野和也, 佐藤遼太, 星輝，西舘泉.
  • Organizer: レーザー学会学術講演会第35回年大会
  • Place of Presentation: 東京，東海大学高輪校舎
  • Year and Date: 2015-01-11 – 2015-01-12
  • Invited
• [Presentation] 非接触型静脈コンプライアンスイメージングに対する評価実験 (2014)
  • Author(s): 中野和也, 佐藤遼太, 星輝，鈴木裕之, 西舘泉.
  • Organizer: 第54回光波センシング技術研究講演会
  • Place of Presentation: 東京理科大学 神楽坂キャンパス 森戸記念館
  • Year and Date: 2014-12-09 – 2014-12-10
• [Presentation] 静脈コンプライアンスの非接触型計測の評価 (2014)
  • Author(s): 中野和也, 佐藤遼太, 星輝, 鈴木裕之, 西舘泉.
  • Organizer: 日本光学会年次学術講演会 Optics & Photonics Japan 2014
  • Place of Presentation: 筑波大学東京キャンパス文京校舎
  • Year and Date: 2014-11-05 – 2014-11-07
• [Presentation] Unconstrained Imaging of Venous Compliance Using RGB camera (2014)
  • Author(s): Kazuya Nakano, Ryohei Matsuda, Ryota Satoh, Hiroyuki Suzuki, and Izumi Nishidate.
  • Organizer: Biomedical Imaging and Sensing Conference (BISC) 2014
  • Place of Presentation: Pacifico Yokohama, Japan
  • Year and Date: 2014-04-22 – 2015-04-24