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26-07-2023 | Computed Tomography | Original Article

Forensic age estimation in adults by pubic bone mineral density using multidetector computed tomography

Authors: Shuai Luo, Fei Fan, Xing‑tao Zhang, An-jie Liu, Yu-shan Lin, Zi-qi Cheng, Chang-xing Song, Jun-jing Wang, Zhen-hua Deng, Meng‑jun Zhan

Published in: International Journal of Legal Medicine | Issue 5/2023

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Abstract

Radiology plays a crucial role in forensic anthropology for age estimation. However, most studies rely on morphological methods. This study aims to investigate the feasibility of using pubic bone mineral density (BMD) as a new age estimation method in the Chinese population. 468 pubic bone CT scans from living individuals in a Chinese hospital aged 18 to 87 years old were used to measure pubic BMD. The BMD of the bilateral pubic bone was measured using the Mimics software on cross-sectional CT images and the mean BMD of the bilateral pubic bone was also calculated. Regression analysis was performed to assess the correlation between pubic BMD and chronological age and to develop mathematical models for age estimation. We evaluated the accuracy of the best regression model using an independent validation sample by calculating the mean absolute error (MAE). Among all established models, the cubic regression model had the highest R2 value in both genders, with R2 = 0.550 for males and R2 = 0.634 for females. The results of the best model test showed that the MAE for predicting age using pubic BMD was 8.66 years in males and 7.69 years in females. This study highlights the potential of pubic BMD as a useful objective indicator for adult age estimation and could be used as an alternative in forensic practice when other better indicators are lacking.
Literature
Metadata
Title
Forensic age estimation in adults by pubic bone mineral density using multidetector computed tomography
Authors
Shuai Luo
Fei Fan
Xing‑tao Zhang
An-jie Liu
Yu-shan Lin
Zi-qi Cheng
Chang-xing Song
Jun-jing Wang
Zhen-hua Deng
Meng‑jun Zhan
Publication date
26-07-2023
Publisher
Springer Berlin Heidelberg
Published in
International Journal of Legal Medicine / Issue 5/2023
Print ISSN: 0937-9827
Electronic ISSN: 1437-1596
DOI
https://doi.org/10.1007/s00414-023-03067-1

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