特定于玩家的白质分片和缩放在冲击引起的应变反应中的作用
Véronique Bouvette1,2,3,4, Samuel Guay2,5, Louis De Beaumont2,6
1Department of Mechanical Engineering, École de Technologie Supérieure, 1100 Notre-Dame Street West, Montreal, QC, H3C 1K3, Canada.
Biomechanics and modeling in mechanobiology
|April 3, 2025
概括
在头部有限元模型 (hFEM) 中精制白质 (WM) 的分片化显著改善了对冲击的个体大脑反应的捕获. 这种详细的方法提高了对脑震荡下头部冲击 (SHIs) 的损伤预测.
科学领域:
- 伤害的生物力学
- 神经科学是一个神经科学.
- 计算建模计算建模
背景情况:
- 头部有限元模型 (hFEM) 对于理解头部撞击伤害机制至关重要.
- 个性化hFEM,使用大脑体积缩放,是有效的个体大脑反应分析.
- 详细的白质 (WM) 分片对hFEM应变反应的影响,特别是对脑震荡下头部冲击 (SHI) 的影响,尚不清楚.
研究的目的:
- 为了评估精细的,特定于个体的WM分片 (34个段) 对hFEMs的大脑应变应变性的影响.
- 评估大脑体积变化如何影响这些应力反应.
- 为了确定精细的WM分片在捕捉玩家对头部冲击的特定反应中的有效性.
主要方法:
- 个性化21个hFEM使用21名加拿大大学足球队球员的扩散权重成像数据.
- 模拟了四个头部撞击场景 (第50个和第99个百分点的加速度,正面和角向右上方向).
- 分析了峰值最大主要应变 (95MPS) 和应变率 (95MPSr) 作为损伤预测指标.
主要成果:
- 与基线分片相比,精细的特定玩家的WM分片捕获了较大的菌株反应变异性.
- 在95MPS中高达75.71%和95MPSr中高达77.14%的响应在精细的WM部分之间存在差异.
- 高强度的角度顶部冲击显示出比低强度或正面冲击更大的玩家特异性.
结论:
- 在hFEM中对特定主体精细的WM分片增强了捕捉个体大脑应激反应的能力.
- 这种详细的分片对于全面的伤害评估至关重要,并且与WM完整性的成像研究保持一致.
- 提出的方法为未来的SHI研究和个性化伤害风险评估提供了一个有希望的方法.
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