Identification of suitable wavelength bands for remote blood glucose sensing based on multi-wavelength spectroscopy

2022 Fiscal Year Final Research Report

• Project/Area Number: 21K18106
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 90150:Medical assistive technology-related
• Research Institution: Nagaoka University of Technology (2022); Aoyama Gakuin University (2021)
• Principal Investigator: Oiwa Kosuke 長岡技術科学大学, 工学研究科, 准教授 (20781032)
• Project Period (FY): 2021-04-01 – 2023-03-31
• Keywords: 遠隔血糖値計測 / 多波長分光計測 / 近赤外帯域 / 第I近赤外光学窓

Outline of Final Research Achievements

The aims of this study are to identify the wavelength band suitable for remote blood glucose measurement by multi-wavelength spectroscopy and to estimate blood glucose levels using facial images measured in the identified wavelength band. In the first year, a comparison of estimation accuracy of blood glucose levels based on facial images measured in visible, near-infrared, and infrared bands was performed. As a result, the accuracy based on facial images measured in the near-infrared band was the highest. In the last year, a comparison of estimation accuracy of blood glucose levels based on facial images measured in the first near-infrared region and the second near-infrared region was performed. As a result, the accuracy based on facial images measured in the first near-infrared region was higher. These results suggested that the wavelength band suitable for remote blood glucose measurement is the first near-infrared region.

Free Research Field

生体医工学

Academic Significance and Societal Importance of the Research Achievements

本研究で得られた遠隔血糖値計測に適した波長帯域は近赤外帯域の中でも第I近赤外光学窓であることが示唆された結果は，既存研究では実施されていない遠隔血糖値センシング手法の実現に繋がり，学術的意義があると考えられる。さらに，本研究の成果は従来の侵襲的な血糖値計測手法に代わる新奇的な血糖値計測手法の開発・実現に繋がり，血糖値計測におけるQOLの向上や持続的な血糖値モニタリングの実現が期待できるため，社会的意義が大きい。