最小年龄原则与贝叶斯方法相比,将磁共振成像中的年龄指标结合起来,用于多因素法医年龄估计
Heleen Coreelman1,2,3, Jannick De Tobel1, Thomas Widek4,5
1Department of Diagnostic Sciences - Radiology, Ghent University, Ghent, Belgium.
Journal of forensic sciences
|February 10, 2026
概括
与最小年龄原则相比,贝叶斯的方法提供了优越的多因素法医年龄估计. 这种方法提供了更准确的预测间隔和更好的未成年人分类,提高了年龄评估的可靠性.
科学领域:
- 法医科学 法医科学 法医科学
- 人类学是人类学.
- 放射学 放射学是一门学科.
背景情况:
- 多因素年龄估计,整合来自多个解剖部位的数据,优先于单位方法,以提高准确性.
- 多因素年龄估计的一个关键挑战是准确计算整体预测间隔 (PI).
- 两个不同的方法,最小年龄原则和贝叶斯方法,在PI计算中的有效性方面进行了比较.
研究的目的:
- 为了比较最小年龄原理和贝叶斯方法的性能,用于多因素法医年龄估计.
- 评估每个方法生成的预测间隔的准确性和可靠性.
- 用两种方法评估成人和未成年人的正确分类率.
主要方法:
- 在335名13-24岁的健康奥地利白人男性身上进行了第三牙,左手/手腕和关节末的磁共振成像 (MRI).
- 骨和牙发育被分阶段使用既定的标准.
- 使用最小年龄原则和贝叶斯方法进行了年龄估计,随后对性能指标进行了比较.
主要成果:
- 与最小年龄原则相比,贝叶斯方法的平均绝对误差 (1.41年) 和根平均平方误差 (1.80年) 较低 (分别为1.47年和1.81年).
- 贝叶斯的方法实现了更高的覆盖率 (81.5%) 预测间隔比最低年龄原则 (68.7%).
- 贝叶斯方法在正确分类未成年人方面表现优越 (基于PI的81.5%),与最低年龄原则相比 (基于PI的69.2%).
结论:
- 贝叶斯的方法显著优于多因素法医年龄估计的最低年龄原则.
- 贝叶斯方法允许构建更合适和可靠的预测间隔.
- 这种预测间隔的提高准确性导致对个人,特别是未成年人的更可靠的分类.
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