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2003 Fiscal Year Final Research Report Summary

Theoretical Study on High-Quality Visualization of Breast Cancer Using Microwaves

Research Project

Project/Area Number 13680943
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomedical engineering/Biological material science
Research InstitutionOita University

Principal Investigator

TANAKA Mitsuru  Oita University, Faculty of Engineering, Professor, 工学部, 教授 (30091341)

Project Period (FY) 2001 – 2003
Keywordsinverse scattering problem / breast cancer / visualization algorithm / nonlinear optimization / descent methods / regularization / finite difference method / genetic algorithm
Research Abstract

It is the purpose of this research to provide high-quality visualization algorithms of imaging strongly scattering objects such as a breast cancer. The research results are summarized as follows.
1.In the analysis of frequency-domain inverse scattering problems, we employ the genetic algorithm (GA), the conjugate gradient method, and the Levenberg-Marquardt method for the reconstruction of relative permittivities of objects. On the other hand, the GA and the conjugate gradient method are used in time-domain inverse scattering problems. Both the frequency-and time-domain inverse scattering problems are reduced to nonlinear optimization problems. Then we can derive efficient visualization algorithms effective in strongly scattering objects. Note that the GA is very useful for a one-dimensional inverse scattering problem.
2.In frequency-domain inverse scattering problems, the convergence speed for the multifrequency case is much faster than that for the single-frequency case. The optimal re … More gularization parameter is determined by minimizing the absolute value of the radius of curvature of the generalized cross-validation (GCV) function. This method provides successful reconstructions with the property of much faster convergence than the conventional GCV method. To accelerate the visualization algorithm, we propose a new regularization method where the regularization term is dynamically changed with the residual error in the scattered electric field.
3.The effect of an incident pulse on the accuracy of image reconstruction in time-domain inverse scattering is also studied. It is confirmed that the reconstruction accuracy can be considerably improved by selecting the wave form of an incident pulse. Especially, we can obtain good reconstructions by using the monocycle pulse.
It is concluded from the research results that the visualization algorithms proposed have the properties of fast-convergence and high-resolution. Then these algorithms can be applied to the imaging of a breast cancer. Less

  • Research Products

    (42 results)

All Other

All Publications (42 results)

  • [Publications] M.Tanaka, K.Ogata: "Inverse scattering of two-dimensional dielectric objects with multifrequency scattering data"JSAEM Studies in Applied Electromagnetics and Mechanics. 9. 623-624 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Narada, M.Tanaka, T.Takenaka: "Image reconstruction of a three-dimensional dielectric object using a gradient-based optimization"Microwave and Optical Technology Letters. 29. 332-336 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 白木原太, 松成洋一, 田中充: "光CTによる生体のイメージング"大分大学VBL年報. 1. 89-96 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka: "Application of the conjugate gradient method to fast image reconstruction of cylindrical dielectric objects"Proc.2001 Progress in Electromagnetics Research Symposium. 220-220 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka, K.Ogata: "Fast inversion method for electromagnetic imaging of cylindrical dielectric objects with optimal regularization parameter"IEICE Transactions on Communications. E84-B. 2560-2565 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka: "Convergence acceleration of a reconstruction algorithm in electromagnetic inverse scattering problem"Proc.2^<nd> Japan, Australia, and New Zealand Joint Seminar. 34-34 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 田中充, 松成洋一, 白木原太: "光CTによる生体組織の媒質定数の再構成"大分大学工学部研究報告. 45. 21-26 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 田中充, 松成洋一, 白木原太, 清水達浩: "光CTによる生体組織の可視化"大分大学VBL年報. 2. 93-100 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Design procedure for a polarization-transformation filter with a multilayered chiral slab"Proc.4th Asia-Pacific Engineering Research Forum on Microwaves and Electromagnetic Theory. 110-117 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Design consideration of a polarization transformation transmission filter with genetic algorithm"2002 Asia-Pacific Microwave Conference Proceedings. 1. 313-316 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Genetic algorithm applied to optimal design of a polarization-transformation filter"Proc.2002 Interim International Symposium on Antennas and Propagation. 556-559 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka: "Convergence acceleration of a reconstruction algorithm in electromagnetic inverse scattering problem"JSAEM Studies in Applied Electromagnetics and Mechanics. 14. 155-162 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 楠敦志, 田中充: "遺伝的アルゴリズムによる偏波変換フィルタの最適設計"電子情報通信学会論文誌C. J86-C. 198-199 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 田中充, 清水達浩, 高木秀明, 松成洋一: "光CTにおける逆問題の解析"大分大学VBL年報. 3. 97-104 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Design consideration of polarization-transformation filters using a genetic algorithm"IEICE Transactions on Electronics. E86-C. 1657-1664 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Polarization-transformation characteristics of a multilayered slab constructed from metamaterials and chiral media"2003 Asia-Pacific Microwave Conference Proceedings. 1. 9-12 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka, K.Yoshimoto: "Effect of incident pulse on the accuracy of image reconstruction in time-domain inverse scattering"2003 Asia-Pacific Microwave Conference Proceedings. 1. 114-117 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka, T.Shimizu: "Inverse scattering in optical computed tomography"2003 Asia-Pacific Microwave Conference Proceedings. 1. 619-622 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka, A.Kusunoki: "Polarization transformation characteristics of multilayered chiral slabs"MWE 2003 Microwave Workshop Digest. 49-54 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka: "Design of polarization-transformation filters using chiral media and left-handed metamaterials"Proc.2nd Workshop in 2003 Research Institute of Industrial Technology. 109-130 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka, R.Kurogi: "A new regularization method for inverse scattering of dielectric cylinders"Proc.2004 International Symposium on Antennas and Propagation. (印刷中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Tanaka, K.Ogata: "Inverse scattering of two-dimensional dielectric objects with multifrequency scattering data"JSAEM Studies in Applied Electromagnetics and Mechanics. Vol.9. 623-624 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Harada, M.Tanaka, T.Takenaka: "Image reconstruction of a three-dimensional dielectric object using a gradient-based optimization"Microwave and Optical Technology Letters. Vol.29, No.5. 332-336 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] F.Shirakihara, Y.Matsunari, M.Tanaka: "Biological imaging with optical computed tomography"Oita University Venture Business Laboratory Annual Report. Vol.1. 89-96 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka: "Application of the conjugate gradient method to fast image reconstruction of cylindrical dielectric objects"Proc. 2001 Progress in Electromagnetics Research Symposium. 220 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka, K.Ogata: "Fast inversion method for electromagnetic imaging of cylindrical dielectric objects with optimal regularization parameter"IEICE Transactions on Communications. Vol.E84-B, No.9. 2560-2565 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka: "Convergence acceleration of a reconstruction algorithm in electromagnetic inverse scattering problem"Proc. 2^<nd> Japan, Australia, and New Zealand Joint Seminar. 34 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka, Y.Matsunari, F.Shirakihara: "Image reconstruction of optical properties of a human tissue with optical computed tomography"Reports of the Faculty of Engineering, Oita University. No.45. 21-26 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka, Y.Matsunari, F.Shirakihara, T.Shimizu: "Visualization of optical properties of a human tissue with optical computed tomography"Oita University Venture Business Laboratory Annual Report. Vol.2. 93-100 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Design procedure for a polarization-transformation filter with a multilayered chiral slab"Proc. 4th Asia-Pacific Engineering Research Forum on Microwaves and Electromagnetic Theory. 110-117 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Design consideration of a polarization-transformation transmission filter with genetic algorithm"2002 Asia-Pacific Microwave Conference Proceedings. Vol.1. 313-316 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Genetic algorithm applied to optimal design of a polarization-transformation filter"Proc. 2002 Interim International Symposium on Antennas and Propagation. 556-559 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka: "Convergence acceleration of a reconstruction algorithm in electromagnetic inverse scattering problem"JSAEM Studies in Applied Electromagnetics and Mechanics. Vol.14. 155-162 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kusuniki, M.Tanaka: "Optimal design of a polarization-transformation filter using a genetic algorithm"Transactions of the IEICE C. Vol.J86-C, No.2. 198-199 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka, T.Shimizu, H.Takagi, Y.Matsunari: "Analysis of inverse problems in optical computed tomography"Oita University Venture Business Laboratory Annual Report. Vol.3. 97-104 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Design consideration of polarization-transformation filters using a genetic algorithm"IEICE Transactions on Electronics. Vol.E86-C, No.8. 1657-1664 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kusunoki, M.Tanaka: "Polarization-transformation characteristics of a multilayered slab constructed from metamaterials and chiral media"2003 Asia-Pacific Microwave Conference Proceedings. Vol.1. 9-12 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka, K.Yoshimoto: "Effect of incident pulse on the accuracy of image reconstruction in time-domain inverse scattering"2003 Asia-Pacific Microwave Conference Proceedings. Vol.1. 114-117 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka, T.Shimizu: "Inverse scattering in optical computed tomography"2003 Asia-Pacific Microwave Conference Proceedings. Vol.1. 619-622 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka, A.Kusunoki: "Polarization transformation characteristics of multilayered chiral slabs"MWE 2003 Microwave Workshop Digest. 49-54 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka: "Design of polarization-transformation filters using chiral media and left-handed metamaterials"Proc. 2nd Workshop in 2003 Research Institute of Industrial Technology. 109-130 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Tanaka, R.Kurogi: "A new regularization method for inverse scattering of dielectric cylinders"Proc. 2004 International Symposium on Antennas and Propagation. (to be published).

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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