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Studies on age and sex dependent morphological changes of the coxal bone by three dimensional analysis of the homologous models.

Research Project

Project/Area Number 16K09213
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Legal medicine
Research InstitutionNagoya City University

Principal Investigator

AOKI Yasuhiro  名古屋市立大学, 大学院医学研究科, 教授 (90202481)

Co-Investigator(Kenkyū-buntansha) 琵琶坂 仁  岩手医科大学, 医学部, 非常勤講師 (90405837)
臼井 章仁  東北大学, 医学系研究科, 助教 (90588394)
Research Collaborator TANISJIRI Toyohisa  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords法医人類学 / 寛骨 / 相同モデル / 三次元解析 / 多変量解析 / 年齢推定 / 性別判定 / CT画像 / 画像解析 / 主成分分析 / 法人類学 / 解剖学
Outline of Final Research Achievements

Sexual dimorphisms and age-dependent morphological features of the human coxal bone were quantitatively analyzed using homologous models created from three-dimensional CT images of the pelvis (male: 514, female: 388 samples, age 16-100). Average coxal images of each sex and age decade were generated through principle component analyses (PCA). By measuring average point-topoint distances of 8472 corresponding points (ACPDs) between each homologous coxal image and the average images, the sex of more than 93% of the samples was correctly assigned. Some principal components (PCs) detected in PCA of the homologous models of the samples correlated fairly well with age and are affected by features of the curvature of the iliac crest, the arcuate line and the greater sciatic notch. However, neither multiple regression analysis using PCs related to age nor comparison of ACPDs with the average images of each age decade could produce accurate results for age decade assignment of unknown samples.

Academic Significance and Societal Importance of the Research Achievements

性別判定,年齢推定は法医学的個人識別における重点課題であり,骨盤骨はヒトにおいて性的二型のもっとも顕著な骨であるとともに,恥骨結合面や寛骨耳状面の形態などが年齢推定に有用であることなどから,従来より重視されてきた。本研究では三次元像を相同モデリングにより標準化することにより三次元的定量解析を可能にし,主成分分析などを用いて,年齢依存性の形態変化の検索やや性判別法の開発を行い,一定の成果を得た。相同モデルは骨の三次元分析に利用可能なことが示され,今後の法医人類分野における相同モデリングの利用促進が期待できる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (8 results)

All 2019 2018 2017 2016

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] A quantitative morphological analysis of three-dimensional CT coxal bone images of contemporary Japanese using homologous models for sex and age estimation2019

    • Author(s)
      Biwasaka Hitoshi、Aoki Yasuhiro、Takahashi Yusuke、Fukuta Mamiko、Usui Akihito、Hosokai Yoshiyuki、Saito Haruo、Funayama Masato、Fujita Sachiko、Takamiya Masataka、Dewa Koji
    • Journal Title

      Legal Medicine

      Volume: 36 Pages: 1-8

    • DOI

      10.1016/j.legalmed.2018.09.017

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 主成分分析を利用した骨盤骨の年齢依存性変化の解析(第3報).2019

    • Author(s)
      琵琶坂仁,青木康博,福田真未子,臼井章仁,齋藤春夫,藤田さちこ,高宮正隆,出羽厚二,舟山眞人.
    • Organizer
      第103次日本法医学会学術全国集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Three-dimensional analysis of CT pelvic images using principle component analysis.2018

    • Author(s)
      Biwasaka H, Aoki Y, Fukuta M, Fujita S, Takamiya M, Dewa K, Usui A, Saito H, Funayama M, Sugiyama K.
    • Organizer
      24th Congress of the International Academy of Legal Medicine
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 主成分分析を利用した骨盤骨の年齢依存性変化の解析(第2報).2018

    • Author(s)
      琵琶坂 仁,青木康博,臼井章仁,細貝良行,齋藤春夫,藤田さちこ,高宮正隆,出羽厚二,舟山眞人,杉山一洋.
    • Organizer
      日本法科学技術学会第24回学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Three-dimensional Analysis of CT Pelvic images using Principle Component Analysis2018

    • Author(s)
      Biwasaka H, Aoki Y, Fukuta M, Fujita S, Takamiya M, Dewa K, Usui A, Saito H, Funayama M, Sugiyama K.
    • Organizer
      24th Congress of the International Academy of Legal Medicine
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 主成分分析を利用した寛骨の加齢変化の解析(第3報)2017

    • Author(s)
      琵琶坂 仁,成田孝仁,青木康博,藤田さちこ,高宮正隆,出羽厚二,臼井章仁,細貝良行,齋藤春夫,舟山眞人
    • Organizer
      第101次日本法医学会学術全国集会
    • Related Report
      2017 Research-status Report 2016 Research-status Report
  • [Presentation] 法医学的個人識別における定量的評価法に関する二・三のツール ―DNA 鑑定の確率的評価および骨盤骨の3次元計測による年齢・性別推定.2016

    • Author(s)
      青木康博
    • Organizer
      第100次日本法医学会学術全国集会
    • Place of Presentation
      品川区立総合区民会館(東京都品川区)
    • Year and Date
      2016-06-15
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] 主成分分析を利用した寛骨の加齢変化の解析(第2報)2016

    • Author(s)
      琵琶坂 仁,成田孝仁,青木康博,藤田さちこ,高宮正隆,出羽厚二,臼井章仁,細貝良行,齋藤春夫,舟山眞人
    • Organizer
      第100次日本法医学会学術全国集会
    • Place of Presentation
      品川区立総合区民会館(東京都品川区)
    • Year and Date
      2016-06-15
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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