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

A Development of data processing technique with a fuzzy theory

Research Project

Project/Area Number 05670795
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Radiation science
Research InstitutionTokyo Metropolitan Institute of Gerontology.

Principal Investigator

TOYAMA Hinako  TMIG PET Medical center, Senior Research Scientist, ポジトロン医学研究部門, 主任研究員 (50180188)

Co-Investigator(Kenkyū-buntansha) ODA Keiichi  TMIG PET Medical center, assistant researcher, ポジトロン医学研究部門, 研究員 (70224235)
SENDA Michio  TMIG PET Medical center, head positron medical center, ポジトロン医学研究部門, 副参事研究員 (00216558)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1994: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1993: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsData Base / user-friendly-interface / Modeling / nonlinear least-square-fitting / Marquardt method / Fuzzy theory / Fractal dimension / 3D-surface rendering / parametric image / ファジー理論 / 動態解析 / インターフェイス
Research Abstract

The purposes of this study are to reconstruct a new database system and to develope the new technique of the data analysis for medical images by using a fuzzy theory and a arterial intelligence technic. There are five characters of this database system. A user friendly interface was developed to retrieve and update the database quickly and easily by using worksheets explicitly or implicitly. This database works on our network system and we can access the database from any work stations. A directory address, in which a data file (image or data) is stored, is managed by this database. The new records such as PATIENT,STUDY,SCAN are created automatically when a new datafile is created. The informations for a patient, a study and a scan are recorded in the header of a datafile. We connected this database to the data processing system and reporting system. For example, a history of data processing was saved in the header of the data file and registerd into the data comment field of the data … More record in the database when the datafile was registerd.
We developed a method to generate a fractal dimension image for the T1 weighted MRI image and PET functional images. The fractal dimension at the target point is established as Hausdorff dimension (D) which is defined as N (r) =l/rD,where N (r) is the number of unit voxel with size r covering the three dimensional region enclosed by the area of 7*7 pixel around the target pixel. This method is called "boxcounting method". We modified the method of counting the number of unit voxels in "boxcounting method" to generate a new filter for edge enhancement. In stead of N*N pixel area (N=7), we counted the number of unit voxels in the r*((N-i)/r+r) region, where i and r varied from 1 to N-1. Edge enhanced image was obtained by our new method in a normal case and compared to the conventional fractal dimension image. Using this image we could remove the structure surrounding the brain such as dura and scalp by masking the pixels with the value above the threshold (about 1900) in the filtered image. The contour of the brain was obtained automatically from this image for all slices except a few top slices. Calculation time for filtering and edge detection was about 15 seconds per a slice.
In the model analysis of the dynamic PET images, a fuzzy theory was applied to save the conputation time in the non-linear least square curve fitting. A new searching point in the Flecher algorithm was determind by using a fuzzy set theory. This method was useful to save the calculation time in the noisy data Less

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] 外山比南子: "核医学画像処理システムにおける汎用データベースの利用" 映像情報. 24(26). 1531-1538 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 外山比南子: "PETの医学利用" RADIO ISOTOPES. 2(6). 365-376 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 外山比南子、木村裕一: "モデル解析" 核医学. 30(12). 1497-1501 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 外山比南子: "PET施設におけるコンピューターシステム" PET通信. 6. 15-17 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 谷崎直昭、岡村哲也、千田道雄、外山比南子、石井賢二: "弾性モデルに基づく脳PET画像のROI自動設定システム" 核医学. 31(10). 1157-1166 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Toyama H.: "Uses of a general purpose database in a data analysis system for nuclear medicine" Image Technology and Information Display. Vol24 (26). 1531-1538 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Toyama H.: "PET studies and their clinical application." RADIO ISOTOPES. 2 (6). 365-376 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Toyama H.& Kimura Y.: "Tracer kinetic modeling in nuclear medicine." Kakuigaku. 30 (12). 1497-1501 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Toyama H.: "Computer system in PET center." PET Communications. 6. 15-17 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tanizaki N., Okamura T., Senda M., Toyama H.& Ishii K.: "New semi-automatic ROI setting system for brain PET images based on elastic model." Kakuigaku. 31 (10). 1157-1166 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] H.TOYAMA et al: "A Network System for Data Processing and Management in a PET Center." Europ J Nucl Med. 16. s73 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Senda M., Kanno I., Yonekura Y., Fujita H., Ishii K., Lyshkow H., Miura S., Oda K., Sadato N.& Toyama H.: "Comparison of anatomical standardization methods regarding the sensorimotor foci localization and between-subject variation in H_2^<15>O PET activation, a three-center collaboration study." Annals of Nuclear Med. 8 (3). 201-207 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 外山 比南子: "核医学画像処理システムにおける汎用データベースの利用" 映像情報. 24(26). 1531-1538 (1992)

    • Related Report
      1994 Annual Research Report
  • [Publications] 外山 比南子: "PETの医学利用" RADIO ISOTOPES. 2(6). 365-376 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 外山 比南子、木村 裕一: "モデル解析" 核医学. 30(12). 1497-1501 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 外山 比南子: "PET施設におけるコンピュータシステム" PET通信. 6. 15-17 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 谷崎 直昭、岡村 哲也、千田 道雄、外山 比南子、石井 賢二: "弾性モデルに基づく脳PET画像のROI自動設定システム" 核医学. 31(10). 1157-1166 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 外山比南子: "核医学の理論と応用" 診断と治療. 82. 14-20 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 外山比南子: "モデル解析" 核医学. 30. 1497-1501 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 外山比南子: "PETの医学利用" PADIOISOTOPES. 42. 365-376 (1993)

    • Related Report
      1993 Annual Research Report

URL: 

Published: 1993-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi