压力和度作为外围神经中剪切波速度的预测因素
Chelsea L Rugel1,2,3, Seth D Thompson1,2, Colin K Franz1,2,4
1Shirley Ryan AbilityLab, Chicago, Illinois, United States of America.
PloS one
|March 11, 2025
概括
剪波弹性图 (SWE) 可以诊断外围神经病变. 压力更好地预测坐骨神经剪切波速率 (SWV) ex vivo,但硬度是临床准确性在现场的关键.
科学领域:
- 生物医学工程 生物医学工程
- 神经科学是一个神经科学.
- 医疗成像医学成像
背景情况:
- 剪波弹性图 (SWE) 显示出对非侵入性诊断外围神经病变的前景.
- 有关基于超声波的剪切波速度 (SWV) 测量的准确性存在担忧,因为这些测量是组织硬度与压力的指标.
- 了解SWV,压力和度之间的关系对于使用SWE作为神经病变的生物标志物至关重要.
研究的目的:
- 在不同压力条件下 (膝盖曲/延伸) 在现场评估猫 sciatic 神经的 SWV.
- 使用拉伸试验量化SWV,应力和刚性之间的ex vivo关系.
- 确定影响外围神经SWV的主要机械性质 (应力或刚性).
主要方法:
- 在猫的坐骨神经中90° (减轻应力) 和180° (增加应力) 膝盖位置的SWV的现场评估.
- 切除的坐骨神经进行了ex vivo拉伸测试,以直接测量SWV,应力和度.
- 统计分析以确定SWV上的应力和刚性的预测能力.
主要成果:
- 在体外,坐骨神经SWV可以通过压力和硬性来预测,压力解释了更大的变化.
- 在现场SWV测量表明,当考虑既定的SWV范围和神经粘弹性时,度成为更准确的预测指标.
- 神经的定位和预加载显著影响SWV测量.
结论:
- 压力是坐骨神经SWVex vivo的主导预测因素,但硬度对于准确的体内评估至关重要.
- 在临床SWE应用中标准化肢体定位和神经预负荷至关重要,以避免掩盖神经硬的病理变化.
- SWE具有作为外围神经病变的临床工具的潜力,但需要仔细的参数控制才能进行可靠的硬度评估.
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