脑年龄预测:系统评估部位效应,样本年龄范围和大小
Yuetong Yu1, Hao-Qi Cui1, Shalaila S Haas2
1Djavad Mowafaghian Centre for Brain Health, Department of Psychiatry, University of British Columbia, Vancouver, British Columbia, Canada.
Human brain mapping
|July 1, 2024
概括
研究人员使用35,000多名健康个体的结构神经成像数据开发了一种强大的大脑年龄预测模型. 该模型准确地估计了人类一生中的生物大脑年龄,有助于理解大脑发育和衰老.
科学领域:
- 神经科学是一个神经科学.
- 放射学 放射学是指放射学
- 生物统计学 生物统计学
背景情况:
- 通过结构神经成像来估计大脑年龄,可以了解大脑发育和衰老.
- 现有的模型往往缺乏在人类寿命的广泛适用性.
- 需要在大型,多样化的数据集上训练有素的,公开可用的,经过验证的脑年龄模型.
研究的目的:
- 开发和验证一个预先训练的脑年龄预测模型,适用于整个人类寿命 (5-90年).
- 系统地评估网站协调,年龄范围和样本大小对大脑年龄预测准确性的影响.
- 通过开放科学平台传播该模型,以实现个性化的神经成像指标.
主要方法:
- 系统地检查了来自35,683名健康个体 (年龄在5-90岁) 的大脑形态测量数据上的七个位置协调策略.
- 评估年龄范围和样本大小对模型性能的影响.
- 在独立样本中进行跨数据集通用性测试 (n=2101) 和纵向一致性测试 (n=377).
主要成果:
- 没有网站协调产生更高的年龄预测准确度.
- 将发现样本分为两个年龄区 (5-40岁和40-90岁) 优化了模型性能.
- 大脑年龄预测的准确性稳定,样本大小超过1600名参与者.
结论:
- 一个强大的,预训练的大脑年龄模型覆盖人类寿命已经开发和验证.
- 这些发现为建立准确的大脑年龄预测模型提供了最佳实践信息.
- CentileBrain平台提供了对该工具的开放访问,用于个性化神经成像分析.
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