患有多动症儿童的异常MRI特征:对大规模研究的叙述性审查
Chunyang Wang1,2, Shiyun Wang1, Li Sun3
1State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China.
Brain sciences
|January 28, 2026
概括
大规模的MRI研究显示,注意力缺陷/多动障碍 (ADHD) 儿童的大脑发生了显著的变化. 这些神经解剖学和功能变化,包括灰质,白质和连接性差异,可以作为诊断和治疗的关键神经生物学标记.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 神经成像是一种神经成像.
背景情况:
- 注意缺陷/多动障碍 (ADHD) 是一种普遍存在的儿童神经发育障碍,其特征是注意力不集中,多动和冲动.
- 了解ADHD的神经生物学基础对于提高诊断准确性和治疗策略至关重要.
研究的目的:
- 综合和批判地评估最近的大规模磁共振成像 (MRI) 关于ADHD儿童神经解剖学和功能性大脑变化的研究.
- 通过解决当前的知识差距来确定ADHD诊断和个性化干预的可靠神经生物学标志物.
主要方法:
- 对大型结构性MRI,扩散MRI和功能性MRI (fMRI) 研究进行系统审查和批判性评估.
- 分析神经解剖学发现,包括皮质体积,表面积,前额叶皮质,基底和白质微观结构.
- 评估功能连接,特别是在默认模式网络内,并通过fMRI通过抑制控制缺陷.
主要成果:
- 大规模的结构性MRI研究始终显示ADHD儿童的皮质总体体积,表面积,前额叶皮质和基底质的异常发育.
- 扩散核磁共振扫描显示了关键大脑区域 (例如,未经切割的囊,体,环膜) 的白质完整性受损,异常往往持续到成年.
- fMRI表明默认模式网络枢纽的全球连接性降低和抑制控制的缺陷,可能作为ADHD的神经功能特征.
结论:
- 多模式大规模的MRI研究提供了ADHD神经发育变化的全面观点.
- 灰质,白质微观结构和功能连接的异常是儿科ADHD的重要发现.
- 这些神经生物学变化对提高ADHD诊断和指导个性化治疗方法具有潜在的实用性.
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