Morphometric analysis of sex differences in contemporary Japanese pelves using multidetector computed tomography

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• 作者：Suguru Torimitsu^a ; ^b ; ^{torimitsu-tky@umin.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Yohsuke Makino^a ; ^b ; ^{ymakino-tky@umin.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Hisako Saitoh^b ; ^{hms1466@faculty.chiba-u.jp" class="auth_mail" title="E-mail the corresponding author} ; Ayaka Sakuma^b ; ^{a.sakuma@chiba-u.jp" class="auth_mail" title="E-mail the corresponding author} ; Namiko Ishii^b ; ^{acua2807@chiba-u.jp" class="auth_mail" title="E-mail the corresponding author} ; Daisuke Yajima^b ; ^{yajima.d@faculty.chiba-u.jp" class="auth_mail" title="E-mail the corresponding author} ; Go Inokuchi^b ; ^{goinokuchi@chiba-u.jp" class="auth_mail" title="E-mail the corresponding author} ; Ayumi Motomura^b ; ^{aama0171@chiba-u.jp" class="auth_mail" title="E-mail the corresponding author} ; Fumiko Chiba^a ; ^b ; ^{chibafumico@chiba-u.jp" class="auth_mail" title="E-mail the corresponding author} ; Rutsuko Yamaguchi^a ; ^{rymgch@yahoo.co.jp" class="auth_mail" title="E-mail the corresponding author} ; Mari Hashimoto^a ; ^{kane.a.nite.01@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Yumi Hoshioka^b ; ^{yhoshioka@chiba-u.jp" class="auth_mail" title="E-mail the corresponding author} ; Hirotaro Iwase^a ; ^b ; ^{iwase@faculty.chiba-u.jp" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Forensic anthropology population data ; Multidetector computed tomography ; Pelvis ; Japanese ; Sex discrimination
• 刊名：Forensic Science International
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：257
• 期：Complete
• 页码：530.e1-530.e7
• 全文大小：711 K

文摘

Sex estimation of decomposed or skeletal remains is clearly important in forensic contexts. Recently, contemporary population-specific data has been obtained using multidetector computed tomography (MDCT) scanning. The main purpose of this study was to investigate skeletal pelvic dimorphism in a contemporary Japanese forensic sample and to quantify the accuracy of sex estimation using various pelvic measurements obtained from three-dimensional (3D) CT images. This study used a total of 208 cadavers (104 males, 104 females) of which postmortem CT scanning and subsequent forensic autopsy were conducted between December 2011 and August 2014. Eleven measurements of each pelvis were obtained from 3D CT reconstructed images that extracted only bone data. The measurements were analyzed using descriptive statistics and discriminant function analyses. All except one measurement were dimorphic in terms of sex differences. Univariate discriminant function analyses using these measurements provided sex classification accuracy rates of 62.0–98.1%. The subpubic angle was found to contribute most significantly to accurate sex estimation. Multivariate discriminant functions yielded sex prediction accuracy rates of 63.9–98.1%. In conclusion, the pelvic measurements obtained from 3D CT images of a contemporary Japanese population successfully demonstrated sexual dimorphism and may be useful for the estimation of skeletal sex in the field of forensic anthropology.