Dynamic imaging of the moisture content in the biological tissue by optical coherence tomography

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H04014
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Measurement engineering
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: Iwai Toshiaki 東京農工大学, 工学(系)研究科(研究院), 教授 (80183193)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 光コヒーレンストモグラフィ / 近赤外光 / 水分量 / 水分量動態イメージング / 吸収 / 散乱 / ランバート・ベール則 / スペクトル領域

Outline of Final Research Achievements

Dynamics of water content in a biological tissue is important information of a biological activity. In the research, we first verified the Beer-Lambert law in the near-infrared optical coherence tomography because it can detect only the light keeping the coherency that propagates rectilinearly and is retro-reflected from scatters. Second, we investigated quantitative measurement of the water content distributed in a biological tissue using a double-wavelengths optical coherence tomography system in the time domain. Finally we built up the fast spectral-domain optical coherence tomography system, which can process spectroscopically the double-wavelengths interference intensities at the same time. The potential of the double-wavelengths optical coherence tomography system was demonstrated in imaging the temporal variation of the water content distributed in the tissue of plants.

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