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2006 Fiscal Year Final Research Report Summary

Development of computer-aided diagnosis system for autopsy imaging

Research Project

Project/Area Number 17360190
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Measurement engineering
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

KOBATAKE Hidefumi  Tokyo University of Agriculture and Technology, Headquarters, President, 本部, 学長 (80013720)

Co-Investigator(Kenkyū-buntansha) SHIMIZU Akinobu  Tokyo University of Agriculture and Technology, Institute of Symbiotic Science and Technology, Associate Professor, 大学院共生科学技術研究院, 助教授 (80262880)
EZAWA Hidefumi  National Institute of Radiological Sciences, National Institute of Radiological Sciences, chief pathologist, 重粒子医科学センター病院, 医長 (20300907)
IWASE Hirotaro  Chiba Univ., Graduate School of Medicine, Professor, 大学院医学研究院, 教授 (30272420)
Project Period (FY) 2005 – 2006
KeywordsAutopsy Imaging / Image Processing / Computer-aided Diagnosis / CT / Bone Fracture
Research Abstract

First, we established an interface system for transferring the data from the CT scanner in Chiba University to personal computer for the image processing and built an image database for this study. Then we focused on head and thorax in CT images to develop an bone fracture detection system since bone fractures are one of the most important cause of death Followings are main achievements of this study.
1. Head
The proposed algorithm detected a symmetric plane of the head in 3D CT image and subtracted the gray values in the left part and their corresponding values in the right parts to enhance the difference. The variation of the subtracted values were model statistically using eigen-image method We proposed and evaluated the bone fracture detection method which is based on the results of the analysis.
2. Thorax
We developed the following procedure for detecting bone fracture in the thorax CT images
a) extraction of bone area
b) classification of bones based on human anatomy
c) detection of bone fracture
In the process a), we proposed not only the binarization based method but also fine texture based method. We have applied the process to the CT images in the database and confirmed that it could extract the bone region successfully. The process b) has the statistical model of the point set which can classify the bones into anatomical elements. From the experimental results, it was found that the success rate of the anatomical labeling was about 70%. Finally the last process detected locations of bone fracture based on the continuity of the bone surface. The experimental results showed that it could detect about 70% of the bone fractures with some false positives.

  • Research Products

    (12 results)

All 2007 2006 2005

All Journal Article (12 results)

  • [Journal Article] Autopsy imaging in Japan2007

    • Author(s)
      Ezawa H
    • Journal Title

      Rechtsmedizin 17

      Pages: 19-20

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 3次元胸部CT像上の骨の統計的分類法と死亡時画像診断への応用2007

    • Author(s)
      本間俊樹
    • Journal Title

      電子情報通信学会技術研究報告 Vol. 106, No. 510, MI2005-162

      Pages: 19-22

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] CADのあるAiの未来と無い未来2007

    • Author(s)
      清水昭伸
    • Journal Title

      第4回オートプシー・イメージング学会講演抄録集

      Pages: 15-16

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Does imaging technology overcome problems of conventional postmortem examination? A trial of computed tomography imaging for postmortem examination2006

    • Author(s)
      Hayakawa M
    • Journal Title

      Int J Legal Med. 2006 120・1

      Pages: 24-26

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] オートプシー・イメージングとは、その現状と未来像2006

    • Author(s)
      江澤英史
    • Journal Title

      第65回日本医学放射線学会学術集会抄録集 S57

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 頭部CT画像からの外傷性損傷部位の検出 -吹き抜け骨折による出血部位の抽出-2006

    • Author(s)
      古川大介
    • Journal Title

      電子情報通信学会技術研究報告 Vol. 106, No. 225, MI2006-57

      Pages: 47-51

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 骨格位置情報の統計モデルを利用した3次元胸部CT像上の骨の分類2006

    • Author(s)
      本間俊樹
    • Journal Title

      第16回コンピュータ支援画像診断学会大会合同論文集

      Pages: 331-332

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] オートプシー・イメージング2006

    • Author(s)
      江澤英史
    • Journal Title

      からだの科学 第250巻

      Pages: 130

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 千葉大学法医学教室における解剖前CTの導入について2006

    • Author(s)
      岩瀬博太郎
    • Journal Title

      Ai学会1000字提言 第34回

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Autopsy imaging in Japan and computer aided diagnosis2005

    • Author(s)
      EzawaH, KobatakeH
    • Journal Title

      Abstract of 6th International Symposium on Advances in Legal Medicine(ISALM) 6・1

      Pages: page L10

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 電子アトラスを利用した3次元胸部CT像上の骨の分類2005

    • Author(s)
      本間俊樹
    • Journal Title

      電子情報通信学会技術研究報告 Vol.105, No.386, MI2005-61

      Pages: 63-68

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] オートプシー・イメージングとVirtopsy が中東で邂逅した・・・「第1回法医放射線医学国際シンポジウム」に参加して2005

    • Author(s)
      江澤英史
    • Journal Title

      Ai学会1000字提言 第21回

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

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Published: 2008-05-27  

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