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3-D Quantitative Reconstruction for the Medical Sound Velocity Measurement of Biological Tissue with Ultrasonic Diffraction Tomography

Research Project

Project/Area Number 07650472
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 計測・制御工学
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

YAMADA Akira  Tokyo University of Agriculture and Technology, Graduate School of Bio-Applications & Systems Engineering, Associate Professor, 大学院・生物システム応用科学研究科, 助教授 (20159213)

Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1996: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1995: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsUltrasonic Computed Tomography / Diffraction Tomography / Inverse Scattering / Medical Image Diagnosis / Quantitative CT / Sound Velocity Image / Tree-Dimensional Image / Backward Propagation Rytov / Approximation / 医療診断
Research Abstract

In this study, 3D quantitative rconstruction method for obtaining the sliced biological velocity image on the multi-layred horizontal plane is proposed based on the transmission/receiving data of the sound wave around the vertical axis of the object. For the first thing, to comply with the 3D reconstruction problem compatible with the limited observation aperture and the moderate amount of the data collection and hardware resources, a method was proposed for reducing the original 3D reconstruction problem into the multi-layred 2D tomographic reconstruction by introducing the spatial filter processing in a vertical direction to discriminate the scattered wave from the 2D sliced horizontal surface. As a result, the quasi-3D sound velocity parameter images were reproduced by the 2D image reconstruction operation for the inside of the horizontal surface. For the second things, sound variation of the object was previously restricted to the range within 3 or 4% and observation distance to the immediate vicinity of the object. To resolve this problem, the backward propagation Rytov approximation was proposed aiming at the mitigation of the restriction caused by the weak scattering assumption in the conventional Rytov approximation. It was verified that sound velocity images could be reproduced to the extent of the accuracy as high as average error being within 0.1% even when the sound velocity of the object was varied in a range of approximately <plus-minus>10% and observation distance was prolonged over 50 wavelengths. Above all, its expected that quantitative sound velocity images can be reproduced to satisfy the practical requirement in the medical diagnosis such as for the human breast cancer screening tes

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] Akira Yamada: "Quasi 3-D Quantitative Computerized Tomography for Reconstructing Sound Velocity Slices of a Weakly Scattering Object" Jpn.J.Appl.Phys.35・5B. 3135-3138 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 山田 晃: "生体音速の逆散乱定量CT画像計測" 日本音響学会誌. 52・9. 716-721 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "High Precision Quasi 3-D Quantitative Reconstruction of Sound Velocity Image From the Transmitted Data Around a Single Rotational Axis" Proc.of IEEE U1trasonics Symp.(to be published). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "Quasi 3-D Inverse Scattering Computerized Tomography for High-Precision Sound Velocity Measurement Tissues" ASA and ASJ Third Joint Meeting. 1345-1348 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "Weak Scattering Acoustic Wave Field Analysis UsingBackward Propagation Rytov Transform" Jpn.J.Appl.Phys.36・5B(to be published). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 山田 晃: "超音波回折トモグラフィ" 超音波TECHNO. 9(掲載予定). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "Quasi 3-D Quantitative Computerized Tomography for Reconstructing Sound Velocity Slices of a Weakly Scattering Object" Jpn.J.Appl.Phys.35. 3135-3138 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "Inverse Scattering Quantitative Computerized Tomography for the Sound Velocity Measurement of Biological Tissue" J.Acoust.Soc.Jpn.(J). 52[in Japanese]. 716-721 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "High Precision Quasi 3-D Quantitative Reconstruction of Sound Velocity Image From the Transmitted Data Around a Single Rotational Axis" Proc.of IEEE Ultrasonics Symp., San Antonio. (to be published). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "Quasi 3-D Inverse Scattering Computerized Tomography for High-Precision Sound Velocity Measurement in Tissues" ASA and ASJ Third Joint Meeting, Honolulu. 1345-1348 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "Weak Scattering Acoustic Wave Field Analysis Using Backward Propagation Rytov Transform" Jpn.J.Appl.Phys.36(to be published). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "Ultrasonic Diffraction Tomography" Ultrasonic Technology. Vol.9(to be publised)[in Japanese]. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Akira Yamada: "Quasi 3-D Quantitative Computerized Tomography for Reconstructing Sound Velocity Slices of a Weakly Scattering Object" Jpn.J.A.Phys.35・5B. 3135-3138 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 山田晃: "生体音速の逆散乱定量CT画像計測" 日本音響学会誌. 52・9. 716-721 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Akira Yamada: "High Precision Quasi 3-D Quantitative Reconstruction of Sound Velocity Image From the Transmitted Data Around a Single Rotational Axis" Proc.1996 Ultrasonics Symposium. (to be published). (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Akira Yamada: "Quasi 3-D Inverse Scattering Computerized Tomography for High-Precision Sound Velocity Measurement in Tissues" ASA and ASJ Third Joint Meeting. 1345-1348 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Akira Yamada: "Weak Scattring Acoustic Wave Field Analysis Using Backward Propagation Rytov Transform" Jpn.J.A.Phys.36(to be published). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 山田晃: "超音波回折トモグラフィ" 超音波TECHNO. 9(掲載予定). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] Akira Yamada: "Quasi 3-D Quantitative Computerized Tomography for Reconstructing Sound Velocity Slices of a Weakly Scattering Object" Jpn.J.Appl.Phys.(Accepted for publication). (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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