Development of a novel humerus-clavicle model for sex determination using multi-detector computed tomography scanning in a sample of Egyptian population

IF 0.8 Q4 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Forensic Imaging Pub Date : 2024-06-12 DOI:10.1016/j.fri.2024.200601
Heba I. Lashin , Eman A. Zaki , Amal S.A.F. Hafez , Alaa M. Reda , Abdel-moty M.K. Kabbash
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Abstract

Objectives

Sex determination is a critical step in personal identification. Both humerus and clavicle bones exhibit apparent sexual dimorphism in different populations. Multi-detector computed tomography (MDCT) scanning has been widely used in forensic sex estimation. It provides accurate bone measurements for the modern living population. This study aimed to develop a novel model to determine sex using MDCT scanning of humerus and clavicle bones in a sample of Egyptian population.

Material and Methods

Thoracic MDCT scans of 417 Egyptians of both sexes, aged 10-35 years were included. Three-dimensional volume rendering images were reconstructed using Vitrea® CT workstation. The vertical diameter of right humeral head (VDH) and right clavicular length (CL) were measured for each subject using Radiant DICOM viewer.

Results

Both measurements had significantly higher median values among males than females in all age groups above 15 years and were significantly valid for sex estimation. The highest AUC was reported for right VDH, followed by right CL (0.859 and 0.856, respectively). Optimal cut-off points of the right VDH and right CL for predicting males were >40.1 mm and >139.15 mm, respectively. Both studied measurements contributed significantly to univariate and multivariate regression models and gave rise to a novel model that could predict males with 83.5 % overall accuracy.

Conclusion

VDH and CL can be effectively used as an alternative in forensic sex estimation when only humerus and clavicle bones can be measured. The developed model can be easily applied by forensic specialists to estimate sex with high accuracy among Egyptian population.

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在埃及人口样本中利用多载体计算机断层扫描技术开发用于性别鉴定的新型肱骨-锁骨模型
目标性别鉴定是个人识别的关键步骤。在不同人群中,肱骨和锁骨都表现出明显的性别二态性。多载体计算机断层扫描(MDCT)已广泛应用于法医性别鉴定。它为现代生活人群提供了精确的骨骼测量数据。本研究旨在开发一个新模型,利用 MDCT 扫描埃及人口样本中的肱骨和锁骨来确定性别。使用 Vitrea® CT 工作站重建了三维容积渲染图像。结果在 15 岁以上的所有年龄组中,男性的这两项测量值的中位数都明显高于女性,而且在性别估计方面也明显有效。右侧 VDH 的 AUC 最高,其次是右侧 CL(分别为 0.859 和 0.856)。右侧 VDH 和右侧 CL 预测男性的最佳临界点分别为 40.1 毫米和 139.15 毫米。结论 当只能测量肱骨和锁骨时,VDH 和 CL 可作为法医性别鉴定的有效替代方法。法医专家可以很容易地应用所开发的模型对埃及人口的性别进行高准确度的估计。
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来源期刊
Forensic Imaging
Forensic Imaging RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
2.20
自引率
27.30%
发文量
39
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