• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Improvement of Medical X-Ray Imaging Quality Based on Gray Level Envelope Estimation

Research Project

Project/Area Number 13650463
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Measurement engineering
Research InstitutionKyushu University (Faculty of Design)

Principal Investigator

FUKUSHIMA Shigehiro  Kyushu University, Faculty of Design, Prof., 大学院・芸術工学研究院, 教授 (60027927)

Co-Investigator(Kenkyū-buntansha) YOSHINAGA Yukiyasu  Kyushu University, Faculty of Design, Assistant Prof., 大学院・芸術工学研究院, 助手 (60304854)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2003: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2001: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordstrend estimation / shading / hackground variation / compensating X-ray absorption / dynamical model / interpolation / computer-aided-diagnosis
Research Abstract

This study attempted improving the quantification quality in medical X-ray imaging, an important application class, by compensating for the background variation, or trend, by estimating it from a projection image with transparently overlapping complex background. Our special but not limiting examples are double-contrast gastro-radiographic images. The expected effect is more definite correspondence between organ structures and tone-of-gray information, which may be useful in detection and quantification of legions as well as computer-aided and automatic diagnosis. This study specially focused on the physical principle of image formation. A fundamental concept has been composed in which the background is eatimated as a gray-level envelope, which interpolates in the image the gray levels of pixels with locally minimum absorption of the X-ray. This method makes it possible to discriminate the complex background structure in scales adaptive to organ and tissue structures under observation.
… More The major fruits of this study include (1) that a method has been proposed in order to estimate additively overlapped background as a gray level envelope on the basis of a dynamic analogy of free fall of an elastic net, (2) that interpolation methods have been introduced by applying planar triangular patches and curved-surface patches in order to make the gray level envelope more globally adaptive, (3) that a frainework for estimating the background variation has been proposed as well as verifying the effect of the gray level compensation by using it, (4) that the pixel-sampling method has been proposed in order to improve the accuracy of the gray-level envelope, (5) that an advancement of the proposed method has been verified against a method based on the mathematical morphology, another method consistent with the transparently overlapping of X-ray images, (6) that an advancement of the proposed method has been verified against methods based on spatial frequency region filtering of a general approach in image signal processing, and (7) that the possibility has been experimentally demonstrated of estimating the three-dimensional shape structure on the basis of gray level information, as an example of quantification quality improvement of X-ray images. Less

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 福島重廣, 渡利靖子, 吉永幸靖: "医用X線画後における背景変動成分の推定に関する検討[I]"電子情報通信学会技術研究報告. MI 2002-51. 25-30 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 福島重廣, 渡利靖子, 吉永幸靖: "医用X線画像における背景変動成分の推定と補正-力学的モデルにもとづく方法の提案-"第12回コンピュータ支援画像診断学会論文集. 185-186 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 本田武史, 福島重廣, 吉永幸靖: "濃淡包絡面推定法を用いたX線画像補正"2003年電子情報通信学会総合大会講演論文集. 情報・システム2. 348 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 本田武史, 吉永幸靖, 福島重廣: "濃淡包絡面推定法を用いたX線画像補正"第22回日本医用画像工学会大会抄録集. CD-ROM. OP3-11 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 本田武史, 吉永幸靖, 福島重廣: "濃淡包絡面推定法を用いたX線画像補正"平成15年度電気関係学会九州支部連合大会論文集. CD-ROM. 10-2P-13 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Fukushima, Y.Watari, Y.Yoshinaga: "A Study on Estimating the Background Variation in Medical X-Ray Images [1]"Technical Report of IEICE. MI2002-51. 25-30 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Fukushima, Y.Watari, Y.Yoshinaga: "Estimation and Correction of Background Variation in Medical X-Ray Images ---Proposal od a Dynamical Model-Based Method---"Proc.2002 CAS/CAD Joint Conference. 185-186 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Honda, S.Fukushima, Y.Yoshinaga: "X-Ray Image Compensation Using Gray Level Estimation Method"Proc.2003 IEICE General Conference. Information and Systems 2. 348 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Honda, Y.Yoshinaga, S.Fukushima: "X-Ray Image Compensation by Using the Gray-Level Envelope Estimation Method"Proc.JAMIT Annual Meeting 2003. OP3-11(CD-ROM). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] T.Honda, Y.Yoshinaga, S.Fukushima: "X-Ray Image Compensation by Using the Gray-Level Envelope Estimation Method"Record of 2003 Joint Conference of Electrical and Electronics Engineers in Kyushu. 10-2P-13(CD-ROM). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 本田武史, 吉永幸靖, 福嶋重廣: "濃淡包絡面推定法を用いたX線画像補正"第22回日本医用画像工学会大会抄録集. (CD-ROM). OP3-OP11 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 本田武史, 吉永幸靖, 福嶋重廣: "濃淡包絡面推定法を用いたX線画像補正"平成15年度電気関係学会九州支部連合大会論文集. (CD-ROM). 10-2P-13 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 福島重廣, 渡利靖子, 吉永幸靖: "医用X線画像における背景変動成分の推定に関する検討[I]"電子情報通信学会技術研究報告. MI2002-51. 25-30 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 福島重廣, 渡利靖子, 吉永幸靖: "医用X線画像における背景変動成分の推定と補正-力学的モデルにもとづく方法の提案-"第12回コンピュータ支援画像診断学会論文集. 185-186 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 本田武史, 福島重廣, 吉永幸靖: "濃淡包絡面推定法を用いたX線画像補正"2003年電子情報通信学会総合大会情報システム講演論文集2. 348 (2003)

    • Related Report
      2002 Annual Research Report

URL: 

Published: 2001-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi