在磁共振成像-阴性儿科中改变神经结构的发展:1919年儿童的大规模多中心研究
Yingfan Wang1, Minghao Li1, Huijun Li2
1Department of Neurology, Affiliated Brain Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China.
Epilepsia
|December 24, 2025
概括
儿童会扰乱神经发育,导致4-9岁大脑结构的暂时延迟,随后会持续扩大灰质. 这些发现揭示了儿童的不同发育特征.
科学领域:
- 神经科学是一个神经科学.
- 发育儿科 发育儿科
- 医疗成像医学成像
背景情况:
- 儿童对神经发育的影响尚不清楚.
- 磁共振成像 (MRI) 阴性在评估神经发育轨迹方面存在独特的挑战.
研究的目的:
- 在MRI阴性儿科中划分年龄和性别分层的神经结构轨迹.
- 确定与健康对照对发育差异的关键时期.
主要方法:
- 分析了957名儿科患者和962名对照患者 (4-12岁) 的T1加权MRI数据.
- 利用了对位置,尺度和形状的通用增材模型来建模性别分层的发育轨迹.
- 采用基于声素和表面的形态测量来比较皮质形态和不同年龄组的区域灰质体积 (GMV).
主要成果:
- 与对照组相比,患者的总内体积,GMV,脑脊液体积,皮质厚度以及白质强度负担增加.
- 确定了非典型的总表面积轨迹,过早的皮质厚度峰值 (约7岁),和WMH负荷峰值 (约8岁).
- 观察到广泛的皮质形态延迟 (4-9岁),主要在边缘和感觉运动网络中,在10岁后正常化;与成人GMV缩不同,儿科患者表现出边缘扩张,胸膜缩和小脑体积变化.
结论:
- 儿科的特点是异常的神经发育有两个签名:一个短暂的4-9年的脆弱性窗口与延迟和渐进的灰质扩张.
- 这些签名提供了独特的生物标志物,用于区分短暂的中断与正在进行的网络重组.
- 这些发现突出了儿童神经发育的潜在时间干预的关键时期.
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