Potential for personal identification using the volume of the mastoid air cells extracted from postmortem computed tomographic images

Koji Oura, Noriaki Ikeda, Yongsu Yoon, Toyoyuki Kato, Junji Morishita

研究成果: ジャーナルへの寄稿学術誌査読

2 被引用数 (Scopus)

抄録

This study revealed the usefulness of volumetric analysis of mastoid air cells (MACs) extracted from postmortem computed tomography (PMCT) images in characterizing individuals. To characterize deceased persons, the MACs volumes of 61 Japanese PMCT images were measured after thresholding in Hounsfield units and based on the number of voxels on the right and left sides and the voxel size for each person. The volume differences between the right and left MACs and sex were examined. Although there were no obvious volume differences between males and females, the order of sizs on the two sides varied for each person. Moreover, deceased persons could be roughly classified using the total volume of MACs. Deceased persons with similar total volumes could be distinguished further by comparing the ratio of volumes in bilateral MACs. Although the identification process is dependent on samples and different sizes of bilateral MACs, our pilot study indicated that 81.9% (50/61) of deceased persons could be distinguished. In conclusion, volumetric analysis of MACs measured using PMCT imaging has the potential to identify individuals and reduce the number of candidates.

本文言語英語
論文番号102060
ジャーナルLegal Medicine
58
DOI
出版ステータス出版済み - 9月 2022

!!!All Science Journal Classification (ASJC) codes

  • 病理学および法医学
  • 諸問題の倫理的、法的側面

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