Okada, Eiji

写真a

Affiliation

Faculty of Science and Technology, Department of Electronics and Electrical Engineering (Yagami)

Position

Professor

Related Websites

External Links

Other Affiliation 【 Display / hide

  • Dean, Faculty of Science and Technology

  • Dean, Graduate School of Science and Technology

Career 【 Display / hide

  • 1990.04
    -
    1991.03

    日本学術振興会 ,特別研究員

  • 1990.10
    -
    1991.03

    慶應義塾大学理工学部電気工学科 ,訪問研究員

  • 1991.04
    -
    1993.03

    慶應義塾大学理工学部電気工学科 ,助手

  • 1993.04
    -
    1996.03

    慶應義塾大学理工学部 ,専任講師

  • 1994.04
    -
    1996.03

    Honorary Lecturer,Department of Medical Physics and Bioengineering,University College London兼日本学術振興会海外 ,特別研究員

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Academic Background 【 Display / hide

  • 1986.03

    Keio University, Faculty of Science and Engineering, 電気工学科

    University, Graduated

  • 1988.03

    Keio University, Graduate School, Division of Science and Engineeri, 電気工学専攻

    Graduate School, Completed, Master's course

  • 1990.09

    Keio University, Graduate School, Division of Science and Engineeri, 電気工学専攻

    Graduate School, Completed, Doctoral course

Academic Degrees 【 Display / hide

  • Ph.D, Keio University, Coursework, 1990.09

 

Research Areas 【 Display / hide

  • Optical and Image Engineering

  • Biomedical Optics

  • Measurement engineering (Electronic Measurements)

 

Books 【 Display / hide

  • Application of Near Infrared Spectroscopy in Biomedicine

    OKADA EIJI, Springer, 2013

    Scope: 37-58

  • Near infrared spectroscopy

    OKADA EIJI, コロナ社, 2012.02

    Scope: 68

  • NIRS -基礎と臨床-

    OKADA EIJI, Hiroshi Kawaguchi, 新興医学出版社, 2012.01

    Scope: 6-14

  • 精神疾患とNIRS 光トポグラフィー検査による脳機能イメージング

    OKADA EIJI, 中山書店, 2009.06

    Scope: 31-38

  • 電気・電子・情報工学系テキストシリーズ3 電子回路

    高橋進一・岡田 英史, 培風館, 2002.05

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Papers 【 Display / hide

  • Partial optical path length in the scalp in subject-specific head models for multi-distance probe configuration of near infrared spectroscopy

    Yanagisawa T., Kawaguchi H., Obata T., Okada E.

    Proceedings of SPIE - The International Society for Optical Engineering (Proceedings of SPIE - The International Society for Optical Engineering)  10711 2018

    ISSN  9781510619791

     View Summary

    © 2018 SPIE. In the brain function measurement by near infrared spectroscopy using a multi-distance probe configuration, the ratio of the partial optical path length in the scalp for the long spacing probe pair to that for the short spacing probe pair is important for the calculation to eliminate the scalp component in the signal. Light propagation in the subject specific head models of 45 volunteers was calculated to predict the dependence of the partial optical path length in the scalp and the weighting factor for the multi-distance probe configuration. The weighting factor ranges from 1.0 to 2.3 and increases with the scalp thickness when the scalp thickness is less than 15 mm.

  • Measurement of head phantom by functional near infrared imaging using multi-distance probe configuration

    Hayabusa K., Okada E.

    Proceedings of SPIE - The International Society for Optical Engineering (Proceedings of SPIE - The International Society for Optical Engineering)  10711 2018

    ISSN  9781510619791

     View Summary

    © 2018 SPIE. The contamination of the signal corresponding to the blood volume change in the scalp is one of the serious problems in functional near infrared imaging and the multi-distance probe configuration has been used to reduce the contamination of the scalp signal. The head phantom mimicking the local absorption change in the gray matter and global absorption change in the scalp was measured by a functional near infrared spectroscopy system using the multi-distance probe configuration to obtain the topographic image of the absorption change in the phantom. The measurement using the multi-distance probe configuration can effectively reduce the contamination of the scalp signal during the functional near infrared imaging.

  • Evaluation of improvement of diffuse optical imaging of brain function by high-density probe arrangements and imaging algorithms

    Yusuke Sakakibara, Kazuki Kurihara, and OKADA EIJI

    Optical Reivew (Springer)  23 ( 2 ) 323 - 331 2016.04

    Research paper (scientific journal), Accepted

  • Estimation of partial optical path length in the brain in subject-specific head models for near-infrared spectroscopy

    Kotaro Nakamura, Kazuki Kurihara, Hiroshi Kawaguchi, Takayuki Obata, Hiroshi Ito, and OKADA EIJI

    Optical Review (Springer)  23 ( 2 ) 316 - 322 2016.04

    Research paper (scientific journal), Joint Work, Accepted

  • Magnetic resonance imaging appropriate for construction of subject-specific head models for diffuse optical tomography

    Kazuki Kurihara, Hiroshi Kawaguchi, Takayuki Obata, Hiroshi Ito, and Eiji Okada

    Biomedical Optics Express 6 ( 9 ) 3197 - 3209 2015.09

    Research paper (scientific journal), Joint Work, Accepted

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Papers, etc., Registered in KOARA 【 Display / hide

Reviews, Commentaries, etc. 【 Display / hide

  • 拡散光イメージングと脳機能計測への応用

    OKADA EIJI

    光アライアンス 27 ( 2 ) 12 - 17 2016.02

    Introduction and explanation (commerce magazine), Single Work

  • 拡散光イメージングと脳機能計測への応用

    OKADA EIJI

    光技術コンタクト 53 ( 7 ) 16 - 23 2015.07

    Introduction and explanation (commerce magazine), Joint Work

  • Technical trend of noninvasive brain-function imaging by near-infrared spectroscopy

    OKADA EIJI, KAZUKI KURIHARA, HIROSHI KAWAGUCHI, TAKAYUKI OBATA, YOKO HOSHI

    日本レーザー医学会誌 36 ( 2 ) 187 - 194 2015.07

    Introduction and explanation (scientific journal), Joint Work

Presentations 【 Display / hide

  • 上腕圧迫時の分光反射スペクトル変化に基づく皮膚内実効光路長の波長依存性の測定

    佐藤 里奈,白井 大貴,加藤 陽,岡田 英史

    日本光学会年次学術講演会 Optics & Photonics Japan 2017 (東京) , 2017.10, Poster (general)

  • Effect of broadened probing region on functional areas measured by a probe pair of fNIRS

    NITTA TOMONORI, TSUYUKI RYOHEI, KAWAGUCHI HIROSHI, OKADA EIJI

    European Conference on Biomedical Optics 2017 (Munich, Germany) , 2017.06, Poster (general)

  • Solid phantom mimicking localized absorption change in the brain and scalp for near infrared imaging

    HAYABUSA KOKI, OKADA EIJI

    European Conference on Biomedical Optics 2017 (Munich, Germany) , 2017.06, Oral Presentation(general)

  • Influence of superficial tissue thickness on noninvasive detection of fluorescent probe in the brain

    ASAI KOTA,KAWAGUCHI HIROSHI, OBATA TAKAYUKI, OKADA EIJI

    European Conference on Biomedical Optics 2017 (Munich, Germany) , 2017.06, Oral Presentation(general)

  • Light propagation analysis for fluorescence measurements of a molecular probe in the brain

    ASAI KOTA, TOGASHI TAKUYA, OKADA EIJI

    Biomedical Imaging and Sensing Conference 2017 (Yokohama, Japan) , 2017.04, Poster (general)

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Research Projects of Competitive Funds, etc. 【 Display / hide

  • ダイナミックファントムによる高密度プローブ拡散光イメージング法の実証実験

    2016.04
    -
    2019.03

    MEXT,JSPS, Grant-in-Aid for Scientific Research, 岡田 英史, Grant-in-Aid for Scientific Research (C), Principal Investigator

Awards 【 Display / hide

  • 第10回日本ME学会秋季大会 若手研究論文優秀賞

    岡田 英史, 1996.10, 日本ME学会

  • 第15回丹羽記念賞

    岡田 英史, 1992.02

    Type of Award: Awards of Publisher, Newspaper Company and Foundation

  • 日本ME学会 科学新聞賞学術奨励賞

    岡田 英史, 1990.05, 日本ME学会

  • IEEE Engineering in Medicine and Biology Society Student Paper Award

    岡田 英史, 1989.11, IEEE

  • 安藤博記念 学術奨励賞

    岡田 英史, 1989.06

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Courses Taught 【 Display / hide

  • APPLIED MATHEMATICS

    2019

  • BACHELOR'S THESIS

    2019

  • COMPUTER SIMULATION AND ITS EXERCISE

    2019

  • GRADUATE RESEARCH ON INTEGRATED DESIGN ENGINEERING 1

    2019

  • GRADUATE RESEARCH ON INTEGRATED DESIGN ENGINEERING 2

    2019

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Courses Previously Taught 【 Display / hide

  • Information Optics and Optical Measurements

    Keio University, 2018, Major subject, Lecture, Within own faculty

  • コンピュータシミュレーション同実習/数値解析

    Keio University, 2014, Lecture

  • 総合デザイン工学特別研究第2

    Keio University, 2014, Full academic year

  • 総合デザイン工学特別研究第1

    Keio University, 2014, Full academic year

  • 総合デザイン工学課題研究

    Keio University, 2014, Full academic year

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Social Activities 【 Display / hide

  • 文部科学省 科学技術政策研究所 科学技術動向研究センター

    2012.04
    -
    2014.03
  • 一般財団法人光産業技術振興協会 光技術動向調査委員会

    2011.04
    -
    2014.03
  • 一般社団法人 電子情報技術産業協会 医用光生体計測に関する国際標準化対応委員会

    2011.04
    -
    2014.03
  • 独立行政法人新エネルギー・産業技術総合開発機構

    2011.01
    -
    2012.03
  • 日本学術会議国際光学委員会(ICO)分科会光量子化学技術連携委員会

    2010.03
    -
    2011.03

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Memberships in Academic Societies 【 Display / hide

  • 日本ヒト脳機能マッピング学会, 

    2012.08
    -
    Present
  • 日本シミュレーション学会, 

    2012.06
    -
    Present
  • International Conference on Modeling and Simulation Technology, 

    2011.01
    -
    2011.10
  • 応用物理学会日本光学会年次学術講演会OPJ2010プログラム委員会, 

    2010.03
    -
    2010.11
  • 応用物理学会JJAP編集委員会, 

    2009.04
    -
    Present

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Committee Experiences 【 Display / hide

  • 2017.04
    -
    2017.11

    OPJ2017実行委員長, 日本光学会

  • 2016.10
    -
    2017.06

    Program Committee Member, European Conference on Biomedical Optics

  • 2016.07
    -
    2017.08

    Program Committee, Category Chair, The 24th Congress of the International Commission for Optics

  • 2016.04
    -
    2016.11

    OPJ2016 副実行委員長, 日本光学会

  • 2016.02
    -
    2019.12

    International Advisory Board for Physics in Medicine and Biology, Institute of Physics

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