大脑微观结构的寿命规范建模
Julio E Villalón-Reina1, Alyssa H Zhu1, Sebastian Benavidez1
1Imaging Genetics Center, Mark & Mary Stevens Institute for Neuroimaging & Informatics, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
bioRxiv : the preprint server for biology
|November 19, 2025
概括
科学家们使用54,000多名个体的扩散MRI数据创建了第一个大规模的大脑白质 (WM) 微观结构的规范模型. 这个资源有助于检测整个寿命的大脑异常.
科学领域:
- 神经成像是一种神经成像.
- 生物统计学 生物统计学
- 人类大脑解剖学 人类大脑解剖学
背景情况:
- 大脑指标的规范模型对于识别各种神经和精神疾病中的异常至关重要.
- 现有的模型没有充分覆盖大脑白质 (WM) 微观结构.
- 为了准确的诊断和研究,需要一个全面的模型.
研究的目的:
- 开发大脑白质 (WM) 微观结构的第一个大规模规范模型.
- 为WM指标建立特定于年龄和性别的统计分布.
- 为在不同条件下检测和可视化WM异常提供一个工具.
主要方法:
- 利用了19个国际扩散MRI数据集 (N=54,583,年龄在4-91岁).
- 使用标准化协议提取区域扩散张力成像 (DTI) 度量.
- 应用等级贝叶斯回归 (HBR) 来对年龄和性别进行WM指标模型.
主要成果:
- 在不同地区生成WM微观结构的平均寿命轨迹和百分曲线.
- 在轻度认知障碍,阿尔茨海默病和22q11.2删除综合征中检测WM偏差的证明有用性.
- 该模型为识别疾病影响和影响因素提供了一个共同的参考.
结论:
- 开发的WM微观结构的大规模规范模型是科学界的新资源.
- 它可以识别个体或群体的偏差,并进行跨疾病的比较.
- 该模型具有适应性和可扩展性,支持未来对大脑健康和疾病的研究.
相关概念视频
Brain Imaging
644
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
644
Organization of the Brain
2.3K
The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
2.3K
Cognitive Development During Adulthood
752
Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
752


