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High precision analysis on electromagnetic energy absorption of fetus during MR imaging of pregnant woman

Research Project

Project/Area Number 20760218
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Electron device/Electronic equipment
Research InstitutionChiba University

Principal Investigator

齋藤 一幸 (齊藤 一幸)  Chiba University, フロンティアメディカル工学研究開発センター, 助教 (80334168)

Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
KeywordsMRI / 電磁波エネルギー吸収量 / 妊娠女性 / 胎児 / FDTD法 / SAR / RFコイル / 温度分布 / 生体熱輸送方程式 / 妊娠女性数値モデル / 生体等価電磁ファントム / サーモグラフィ法 / 数値人体モデル
Research Abstract

Magnetic resonance imaging (MRI) is an effective method for diagnosis of diseases. The MRIradiates electromagnetic (EM) wave to the body under the high field static magnetic field.Therefore, it is necessary to estimate the EM energy absorption in the human body due to theradiated EM wave. Especially, in this study, EM energy absorption in the abdomen of pregnantwoman and her fetus are investigated by numerical calculations. As a result of the calculations,the EM energy absorption of the fetus is low and does not expected to be teratogenic.

Report

(3 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • Research Products

    (23 results)

All 2010 2009 2008 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (14 results) Book (2 results)

  • [Journal Article] Temperature elevation in the fetus for electromagnetic exposure during magnetic resonance imaging2010

    • Author(s)
      菊池悟, 齊藤一幸, 高橋応明, 伊藤公一
    • Journal Title

      Physics in Medicine and Biology 55

      Pages: 2411-2426

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Specific absorption rate measurement of birdcage coil for 3.0-T magnetic resonance imaging system employing thermographic method2009

    • Author(s)
      Takahiro Kawamura, Kazuyuki Saito, Satoru Kikuchi, Masaharu Takahashi, Koichi Ito
    • Journal Title

      IEEE Transactions on Microwave Theory and Techniques 57

      Pages: 2508-2514

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] MRI用バードケージコイルに挿入された生体内磁界の均一性とSAR評価2009

    • Author(s)
      菊池悟, 齊藤一幸, 高橋応明, 伊藤公一
    • Journal Title

      電子情報通信学会論文誌B J93-B

      Pages: 294-302

    • NAID

      110007538986

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] SAR computation inside fetus by RF coil during MR imaging employing realistic numerical pregnant woman model2009

    • Author(s)
      Satoru Kikuchi, Kazuyuki Saito, Masaharu Takahashi, Koichi Ito, and Hiroo Ikehira
    • Journal Title

      IEICE Transactions on Communications E92-B

      Pages: 431-439

    • NAID

      10026835563

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] MRI用バードケージコイルに挿入された生体内磁界の均一性とSAR評価

    • Author(s)
      菊池悟, 齊藤一幸, 高橋応明, 伊藤公一
    • Journal Title

      電子情報通信学会論文誌B vol.J93-B

      Pages: 294-302

    • NAID

      110007538986

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Specific absorption rate measurement of birdcage coil for 3. 0-T magnetic resonance imaging system employing thermographic method

    • Author(s)
      Takahiro Kawamura, Kazuyuki Saito, Satoru Kikuchi, Masaharu Takahashi, Koichi Ito
    • Journal Title

      IEEE Transactions on Microwave Theory and Techniques vol.57

      Pages: 2508-2514

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] SAR computation inside fetus by RF coil during MR imaging employing realistic numerical pregnant woman model

    • Author(s)
      Satoru Kikuchi, Kazuyuki Saito, Masaharu Takahashi, Koichi Ito, Hiroo Ikehira
    • Journal Title

      IEICE Transactions on Communications vol.E92-B

      Pages: 431-439

    • NAID

      10026835563

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Presentation] 集中定数素子を使用しないMRI用バードケージコイル内の磁界分布測定2010

    • Author(s)
      齊藤一幸, 河村隆宏, 高橋応明, 伊藤公一
    • Organizer
      2010年電子情報通信学会総合大会
    • Place of Presentation
      仙台市
    • Year and Date
      2010-03-18
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] 胎児のMR撮像時におけるSARとRFコイルのエレメント本数の関係2010

    • Author(s)
      菊池悟, 齊藤一幸, 高橋応明, 伊藤公一
    • Organizer
      2010年電子情報通信学会総合大会
    • Place of Presentation
      仙台市
    • Year and Date
      2010-03-18
    • Related Report
      2009 Annual Research Report
  • [Presentation] 集中定数素子を使用しないMRI用RFコイルの磁界均一性評価2010

    • Author(s)
      河村隆宏, 齊藤一幸, 高橋応明, 伊藤公一
    • Organizer
      電子情報通信学会アンテナ・伝播研究会
    • Place of Presentation
      宇部市
    • Year and Date
      2010-01-22
    • Related Report
      2009 Annual Research Report
  • [Presentation] 妊娠女性MRI利用時の電磁波エネルギー吸収量評価-RFコイルの位置と腹部SARの関係-2009

    • Author(s)
      菊池悟, 齊藤一幸, 高橋応明, 伊藤公一
    • Organizer
      生体医工学シンポジウム2009
    • Place of Presentation
      千葉市
    • Year and Date
      2009-09-19
    • Related Report
      2009 Annual Research Report
  • [Presentation] MR撮像時の電磁波曝露で生じる妊娠女性の深部温度上昇解析2009

    • Author(s)
      菊池悟, 齊藤一幸, 高橋応明, 伊藤公一
    • Organizer
      2009年電子情報通信学会ソサイエティ大会
    • Place of Presentation
      新潟市
    • Year and Date
      2009-09-15
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Presentation] Numerical calculation on electromagnetic energy absorption in pregnant woman by RF coil for MRI system2009

    • Author(s)
      Satoru Kikuchi, Kazuyuki Saito, Masaharu Takahashi, Koichi Ito, Hiroo Ikehira
    • Organizer
      2009 International Symposium on Electromagnetic Compatibility
    • Place of Presentation
      京都市
    • Year and Date
      2009-07-23
    • Related Report
      2009 Annual Research Report
  • [Presentation] SAR measurement of birdcage coil for MRI system using thermographic method2009

    • Author(s)
      Kazuyuki Saito, Takahiro Kawamura, Satoru Kikuchi, Masaharu Takahashi,, Koichi Ito
    • Organizer
      Bioelectromagnetics Society Annual Meeting
    • Place of Presentation
      Davos, Switzerland
    • Year and Date
      2009-06-15
    • Related Report
      2009 Final Research Report
  • [Presentation] SAR measurement of birdcage coil for MRI system using thermographic method2009

    • Author(s)
      Kazuyuki Saito, Takahiro Kawamura, Satoru Kikuchi, Masaharu Takahashi, Koichi Ito
    • Organizer
      Bioelectromagnetics Society Annual meeting
    • Place of Presentation
      Davos, Switzerland
    • Year and Date
      2009-06-15
    • Related Report
      2009 Annual Research Report
  • [Presentation] 3T MRIシステムにおけるSARの実測評価2009

    • Author(s)
      河村隆宏, 齊藤一幸, 菊池悟, 高橋応明, 伊藤公一
    • Organizer
      電子情報通信学会総合大会
    • Place of Presentation
      松山市
    • Year and Date
      2009-03-18
    • Related Report
      2009 Final Research Report
  • [Presentation] 3TMRIシステムにおけるSARの実測評価2009

    • Author(s)
      河村隆宏, 濟藤一幸, 菊池悟, 高橋応明, 伊藤公一
    • Organizer
      電子情報通信学会総合大会
    • Place of Presentation
      松山市
    • Year and Date
      2009-03-18
    • Related Report
      2008 Annual Research Report
  • [Presentation] MR撮像時の電磁波による胎児内温度上昇-羊水による熱拡散の評価-2009

    • Author(s)
      菊池悟, 齊藤一幸, 高橋応明, 伊藤公一, 池平博夫
    • Organizer
      電子情報通信学会総合大会
    • Place of Presentation
      松山市
    • Year and Date
      2009-03-17
    • Related Report
      2008 Annual Research Report
  • [Presentation] Measurement of SAR generated by birdcage coil for 3 T MRI system2009

    • Author(s)
      Takahiro Kawamura, Kazuyuki Saito, Satoru Kikuchi, Masaharu Takahashi, and Koichi Ito
    • Organizer
      電子情報通信学会アンテナ・伝播研究会
    • Place of Presentation
      Macau, China
    • Year and Date
      2009-03-10
    • Related Report
      2008 Annual Research Report
  • [Presentation] 高精細な妊娠女性数値モデルを用いたMRI用バードケージコイルによる生体内電磁波曝露量評価2009

    • Author(s)
      菊池悟, 齊藤一幸, 高橋応明, 伊藤公一, 池平博夫
    • Organizer
      電子情報通信学会医療情報通信技術研究会
    • Place of Presentation
      京都市
    • Year and Date
      2009-01-13
    • Related Report
      2009 Final Research Report 2008 Annual Research Report
  • [Presentation] Numerical computation of temperature increase in pregnant woman model induced by electromagnetic absorption of MRI system2008

    • Author(s)
      Satoru Kikuchi, Kazuyuki Saito, Masaharu Takahashi, Koichi Ito, Hiroo Ikehira
    • Organizer
      European Electromagnetics 2008
    • Place of Presentation
      Lausanne, Switzerland
    • Year and Date
      2008-07-22
    • Related Report
      2009 Final Research Report 2008 Annual Research Report
  • [Book] アンテナ工学ハンドブック2008

    • Author(s)
      伊藤公一, 齊藤一幸
    • Publisher
      オーム社
    • Related Report
      2009 Final Research Report
  • [Book] アンテナ工学ハンドブック10.13節を執筆2008

    • Author(s)
      伊藤公一, 齊藤一幸
    • Total Pages
      1074
    • Publisher
      オーム社
    • Related Report
      2008 Annual Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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