Michiue Tomomi, Hishmat Asmaa Mohammed, Oritani Shigeki, Miyamoto Kazunori, Amin Mohamed Farghally, Ishikawa Takaki, Maeda Hitoshi
Department of Legal Medicine, Osaka City University Medical School, Asahi-machi 1-4-3, Abeno, Osaka 545-8585, Japan; Medico-legal Consultation and Postmortem Investigation Support Center, c/o Osaka City University Medical School, Asahi-machi 1-4-3, Abeno, Osaka 545-8585, Japan.
Department of Legal Medicine, Osaka City University Medical School, Asahi-machi 1-4-3, Abeno, Osaka 545-8585, Japan; Department of Forensic Medicine & Clinical Toxicology, Faculty of Medicine, Minia University, 61111 Minia, Egypt.
Forensic Sci Int. 2018 Apr;285:206.e1-206.e6. doi: 10.1016/j.forsciint.2017.11.029. Epub 2017 Nov 24.
In forensic anthropological identification of human remains and single bones, computed tomography (CT) data analysis facilitates volumetric and radiographic density analyses, and a recently developed automated analysis system markedly improved the performance, accuracy, and reproducibility of three-dimensional (3-D) reconstruction. The present study aimed to investigate virtual CT morphometry of the patella for the estimation of sex using postmortem CT data of forensic autopsy cases of Japanese individuals aged ≥18 years (total n=220; 110 males and 110 females; estimated postmortem interval <88h), especially with regard to the efficacy of 3-D bone volumetry. Sex-related differences were detected for all parameters (males>females; p<0.0001), but the differences were the most notable for bone mass volume; the estimated cut-off values (cm) for discriminating males and females were 20.35 with a sensitivity and specificity of 0.85 and 0.91 for the left side and 19.96 with a sensitivity and specificity of 0.83 and 0.92 for the right side, respectively. The mean CT value showed an age-dependent decrease and was particularly low in females aged >60years. These findings indicate the efficacy of virtual CT morphometry of the patella using an automated analyzer for sex estimation.
在对人类遗骸和单块骨骼进行法医人类学鉴定时，计算机断层扫描（CT）数据分析有助于进行体积分析和射线密度分析，并且最近开发的自动化分析系统显著提高了三维（3-D）重建的性能、准确性和可重复性。本研究旨在利用年龄≥18岁的日本个体法医尸检病例的死后CT数据（总共n = 220；110名男性和110名女性；估计死后间隔<88小时），研究髌骨的虚拟CT形态测量法以估计性别，特别是关于三维骨体积测量的功效。所有参数均检测到性别相关差异（男性>女性；p<0.0001），但骨质量体积的差异最为显著；区分男性和女性的估计临界值（cm）左侧为20.35，敏感性和特异性分别为0.85和0.91，右侧为19.96，敏感性和特异性分别为0.83和0.92。平均CT值显示出随年龄的下降，在年龄>60岁的女性中尤其低。这些发现表明使用自动分析仪进行髌骨虚拟CT形态测量法在性别估计方面的功效。
