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Establishment of un-staining and non-invasive diagnosis technique of cancerous tissues using circularly polarized light emitting diodes

Research Project

Project/Area Number 19H04441
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Nozomi Nishizawa  東京工業大学, 科学技術創成研究院, 助教 (80511261)

Co-Investigator(Kenkyū-buntansha) 口丸 高弘  自治医科大学, 医学部, 講師 (10570591)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2019: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Keywords生体光学 / がん診断 / 円偏光 / 光散乱 / スピントロニクス / 光学生検 / 生体工学 / がん検出 / 生体イメージング
Outline of Research at the Start

円偏光を生体組織に照射し、その散乱光の偏光状態を調べることにより生体組織の変化を検出することができ、実際にがん幹部の識別が報告されている。この技術に申請者が開発した小型化可能な円偏光発光ダイオードを適用して内視鏡先端などに搭載することによって、無染色・非侵襲でかつ生体内その場観察が可能な新たながん検出技術の創出を目指す。本研究ではそのために、生体模型・生体組織に対する円偏光応答実験及び シミュレーションを用いて円偏光の散乱過程の解明、技術の適用範囲の検討に取り組み、最終的には、生体内に導入可能な複合がん検出素子の開発する。

Outline of Final Research Achievements

Aiming at development of cancer diagnosis technique using depolarization of circular polarized light scattering, we have studied the depolarization mechanism in biological tissues, applicable diseases and organs, and device developments. Experiments using a biological tissue show that the scattered light from cancerous and healthy parts shows a certain deference between them. Calculations revealed that the differences in circular polarization are due to the enlargement of cell nuclei. Moreover, this technique has depth resolution by modulating the optical configurations. These results suggest that this technique can be used for depth estimations of tumor invasion in early cancer and detections of scirrhous gastric cancer. Simulation analyses show that depth estimations of thin cancerous layer to 2 mm are possible with this technique.

Academic Significance and Societal Importance of the Research Achievements

現在のがん診断技術の主流はいずれも蛍光剤の投与および組織の切除を伴うものである。それらを要さない光のみの診断技術としては狭帯域光観察などがあるが、これは平面分解能が高い反面、深さ方向には情報を得にくいため、別の現象を基にした非侵襲な光学的手法の開発として本研究の技術は有用であると考えられる。また本研究で有用性が示された早期癌の深達度計測は切除を伴わず患者負担を軽減する上、診断の迅速化を促進するものと考えられる。一方で、光の偏光特性は積極的には応用されてこなかったが、散乱現象を介した測定技術としての活路を開き、未開拓の偏光応用という分野を切り開くことは学術的にも産業的にも意義深いと考えられる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (34 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (25 results) (of which Int'l Joint Research: 8 results,  Invited: 3 results) Remarks (1 results)

  • [Int'l Joint Research] パレスチナ工科大学(パレスチナ(PLO))

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Palestine Technical University(パレスチナ(PLO))

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Palestine Technical University(パレスチナ(PLO))

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Lateral-Type Spin-Photonics Devices: Development and Applications2021

    • Author(s)
      Nozomi Nishizawa, Hiro Munekata
    • Journal Title

      Micromachines

      Volume: 12 Issue: 6 Pages: 644-644

    • DOI

      10.3390/mi12060644

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Recent Progress of Spin-photonic Devices and its Applications2020

    • Author(s)
      Nishizawa Nozomi
    • Journal Title

      IEEJ Transactions on Fundamentals and Materials

      Volume: 140 Issue: 3 Pages: 113-118

    • DOI

      10.1541/ieejfms.140.113

    • NAID

      130007804344

    • ISSN
      0385-4205, 1347-5533
    • Year and Date
      2020-03-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Angular optimization for cancer identification with circularly polarized light2020

    • Author(s)
      Nishizawa Nozomi、Al‐Qadi Bassam、Kuchimaru Takahiro
    • Journal Title

      Journal of Biophotonics

      Volume: 14 Issue: 3 Pages: 202000380-202000380

    • DOI

      10.1002/jbio.202000380

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spatial discrimination of cancer using circular polarization of light scattered by biological tissues2020

    • Author(s)
      Nishizawa N.、Kawashima S.、Al-Qadi B.、Kuchimaru T.、Munekata H.
    • Journal Title

      Proceedings of SPIE

      Volume: Vol. 11521 Pages: 11521141-4

    • DOI

      10.1117/12.2573280

    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Monte Carlo simulation of scattered circularly polarized light in biological tissues for detection technique of abnormal tissues using spin-polarized light emitting diodes2020

    • Author(s)
      Nishizawa Nozomi、Hamada Atsushi、Takahashi Kazumasa、Kuchimaru Takahiro、Munekata Hiro
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SE Pages: SEEG03-SEEG03

    • DOI

      10.35848/1347-4065/ab69db

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 円偏光散乱を用いたスキルス胃がん検出のモンテカルロシミュレーションによる検討2022

    • Author(s)
      西沢望, 口丸高弘
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 室温円偏光スピン発光ダイオード作製に関する現状2022

    • Author(s)
      宗片 比呂夫, 加来 滋, 西沢 望.
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 円偏光散乱を用いたがん評価技術の開発2022

    • Author(s)
      西沢 望.
    • Organizer
      基礎研究機構 成果報告会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 円偏光散乱を用いた早期がんの深達度計測技術2021

    • Author(s)
      西沢望, 口丸高弘
    • Organizer
      日本光学会年次学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 2波長の円偏光散乱を用いたがん深達度計測の モンテカルロシミュレーション2021

    • Author(s)
      西沢望, 口丸高弘
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Monte Carlo Simulation for depth identification of cancer invasion using scattering of circularly polarized light2021

    • Author(s)
      N. Nishizawa, T. Kuchimaru, K. Hara, H. Munekata.
    • Organizer
      The 6th International Symposium on Biomedical Engineering
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 円偏光散乱によるがん評価技術2021

    • Author(s)
      西沢望
    • Organizer
      第17回 偏光計測研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 円偏光散乱によるがん識別の検証2021

    • Author(s)
      西沢望, 宗片比呂夫, 口丸高弘, 原 和彦
    • Organizer
      生体医歯工学共同研究拠点 令和2年度成果報告会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 円偏光散乱によるがん識別の検証2021

    • Author(s)
      西沢望, 宗片比呂夫, B. Al-Qadi, 口丸高弘, 原 和彦
    • Organizer
      生体医歯工学共同研究拠点 令和2年度成果報告会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 円偏光発光ダイオードとがん検出応用2021

    • Author(s)
      西沢 望, 宗片 比呂夫
    • Organizer
      令和3年 東北大学電気通信研究所 共同プロジェクト研究会 「固体中のスピン・軌道ダイナミクスとその制御」
    • Related Report
      2020 Annual Research Report
  • [Presentation] 円偏光発光ダイオードとがん細胞検出2021

    • Author(s)
      西沢 望
    • Organizer
      極低温研究支援センター研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Spatial discrimination of cancer using circular polarization of light scattered by biological tissues2020

    • Author(s)
      Nozomi Nishizawa, Shinya Kawashima, Bassam Al Qadi, Takahiro Kuchimaru, Hiro Munekata
    • Organizer
      OPTICS & PHOTONICS International Congress (OPIC2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 円偏光散乱を用いたがん検出における深さ分解能2020

    • Author(s)
      西沢 望, 河島 眞弥, 口丸高弘, 宗片比呂夫
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 円偏光を用いたがん組織の走査測定2020

    • Author(s)
      西沢 望, B. Al-Qadi, 口丸高弘, 宗片比呂夫
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 円偏光散乱を用いたがん検出の空間分解能2020

    • Author(s)
      西沢 望, B. Al-Qadi, 口丸高弘, 宗片比呂夫
    • Organizer
      生体医工学シンポジウム2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] 円偏光散乱を用いた上皮内がん検出のモンテカルロシミュレーション2020

    • Author(s)
      西沢 望, 口丸 高弘
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 円偏光散乱を用いたがん検出の実証2020

    • Author(s)
      西沢望, 河島眞弥, 宗片比呂夫, Bassam Al-Qadi, 口丸 高弘, 原 和彦
    • Organizer
      令和元年度生体医歯工学共同研究拠点 成果報告会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 円偏光散乱を用いたがん検出2020

    • Author(s)
      西沢 望, Bassam Al-Qadi, 口丸 高弘, 宗片 比呂夫
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cancer Detection using circular polarization of light scattered by biological tissues2019

    • Author(s)
      N. Nishizawa, B. Al-Qadi, T. Kuchimaru, K. Takahashi, K. Hara, H. Munekata
    • Organizer
      The 4th International Symposium on Biomedical Engineering (ISBE2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Recent progress in spin-LED: realization of pure circular polarization EL at room temperature with current density of 10 A/cm22019

    • Author(s)
      Nozomi Nishizawa, Hiro Munekata
    • Organizer
      SPIE Optics+Photonics 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Non-invasive, unstaining, and in vivo diagnosis technique of tumor tissues using circularly polarized light2019

    • Author(s)
      Nozomi Nishizawa, Kazumasa Takahashi, Atsushi Hamada, Takahiro Kuchimaru, Hiro Munekata
    • Organizer
      SPIE Optics+Photonics 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electroluminescence characteristics and spin dynamics of spin-light-emitting diodes (spin-LEDs) consisting of oxidized Al /AlAs tunneling barriers2019

    • Author(s)
      Ryohei Ito, Nozomi Nishizawa, Hiro Munekata
    • Organizer
      The 21st International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON21)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 実用円偏光源としてのSpin-LED素子2019

    • Author(s)
      西沢 望
    • Organizer
      電気学会 光・熱・磁気の相互作用を利用した新規スピンデバイス・ストレージ技術調査専門委員会 第11回委員会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Electrical Circular Polarization Switching at Room Temperature with Spin-Polarized Light Emitting Diodes2019

    • Author(s)
      N. Nishizawa, H. Munekata
    • Organizer
      Magnetics and Optics Research International Symposium (MORIS2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] An Application of Spin-LED: Unstraining and Non-Invasive Cancer Detection Using Circularly Polarized Light2019

    • Author(s)
      A. Hamada, H. Munekata, N. Nishizawa
    • Organizer
      Magnetics and Optics Research International Symposium (MORIS2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 光の偏光を使って癌を探す

    • URL

      https://www.youtube.com/watch?v=B7l3yOLYYyg

    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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