独特的功能性MRI连接模式和皮质体积变化与重复性爆炸暴露相关的特殊行动部队成员
Andrea Diociasi1,2, Mary A Iaccarino3,4,5,6, Scott Sorg6
1Department of Radiology, Mass General Brigham, Massachusetts General Hospital, Boston, Mass.
Radiology
|April 1, 2025
概括
在特种作战部队中,重复的爆炸暴露与大脑结构和功能的变化有关,与神经行为症状相关. 功能连接 (FC) 可能表明与爆炸有关的创伤,即使没有明显的解剖变化.
科学领域:
- 神经成像是一种神经成像.
- 军事医学 军事医学
- 创伤性脑损伤 创伤性脑损伤
背景情况:
- 特别行动部队 (SOF) 成员经常面临爆炸伤害,增加了创伤性脑损伤 (TBI) 的风险.
- 累积爆炸暴露,神经影像检测结果和SOF持续症状之间的联系还不清楚.
- 了解这些关系对于SOF的健康和表现至关重要.
研究的目的:
- 调查SOF成员中爆炸损伤频率,长期临床症状和脑MRI衍生的皮质体积和功能连接性 (FC) 变化之间的关联.
- 确定与爆炸暴露严重程度和相关的神经行为结果相关的神经成像标记.
- 根据fMRI数据开发爆炸暴露的预测模型.
主要方法:
- 一个潜在的队列212SOF成员与重复的爆炸暴露史经历精神诊断和结构性/休息状态功能性MRI (fMRI).
- 参与者被分为高暴露和低暴露组. 分析了FC和皮质灰质量,并与健康对照进行了比较.
- 用多重线性回归和逻辑回归模型来评估相关性和预测能力.
主要成果:
- 高爆发暴露组在神经行为症状清单 (NSI) 和PTSD检查清单 (PCL-5) 上表现出更高的得分.
- 在暴露组之间观察到侧向尾皮质 (LOC),前置中枢皮质和前皮质 (precuneus) 中存在显著的FC差异.
- 临床症状得分与多个大脑区域的FC相反相关,在高暴露组的LOC中注意到皮质体积增加.
结论:
- 在SOF成员中,重复的爆炸暴露会导致大脑功能连接和皮质体积的明显变化.
- 这些神经成像变化与神经行为症状相关,包括与TBI和PTSD相关的症状.
- 基于fMRI的预测模型表明,即使没有明显的结构异常,也有可能识别与爆炸有关的创伤.
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