Individual Muscle Force Estimation in the Human Forearm Using Multi-Muscle MR Elastography (MM-MRE)
Individual Muscle Force Estimation in the Human Forearm Using Multi-Muscle MR Elastography (MM-MRE)
复制标题
使用多肌肉 MR 弹性成像 (MM-MRE) 估计人体前臂的个体肌肉力量
DOI：
10.1109/tbme.2023.3283185
复制
发表时间：
2023
影响因子：
4.6
通讯作者：
Sergi, Fabrizio
中科院分区：
文献类型：
--
作者：
Smith, Daniel R.;Helm, Cody A.;Zonnino, Andrea;McGarry, Matthew D.J.;Johnson, Curtis L.;Sergi, Fabrizio
目的建立灵敏度的磁共振弹性成像（MRE）主动肌肉收缩在多个肌肉的前臂。MethodsWe相结合的MRE前臂肌肉与MRI兼容的设备，MREbot，同时测量组织的机械性能在前臂和腕关节施加的扭矩在等距tasks.MethodsWe。我们通过MRE在一系列收缩状态和手腕姿势下测量了13块前臂肌肉的剪切波速度，并将这些输出与基于肌肉骨骼模型的力估计算法相匹配。结果剪切波速度在几个因素上发生显着变化，包括肌肉是否被招募为激动剂或拮抗剂（p = 0.0019）、扭矩振幅（p = <0.0001）和手腕姿势（p = 0.0002）。在激动剂（p = <0.0001）和拮抗剂（p = 0.0448）收缩期间，剪切波速度显著增加。此外，在更高的载荷水平下，剪切波速度有更大的增加。这些因素引起的变化表明了肌肉对功能负荷的敏感性。在剪切波速度和肌肉力量之间的二次关系的假设下，MRE测量值占测量的关节torque.ConclusionThis研究的方差的70%的平均值显示MM-MRE捕捉个别肌肉剪切波速度的变化，由于肌肉激活的能力，并提出了一种方法来估计个别肌肉力量通过MM-MRE派生测量剪切波速度。MRE可用于建立控制手和腕功能的前臂肌肉的正常和异常肌肉共同收缩模式。
ObjectiveTo establish the sensitivity of magnetic resonance elastography (MRE) to active muscle contraction in multiple muscles of the forearm.MethodsWe combined MRE of forearm muscles with an MRI-compatible device, the MREbot, to simultaneously measure the mechanical properties of tissues in the forearm and the torque applied by the wrist joint during isometric tasks. We measured shear wave speed of thirteen forearm muscles via MRE in a series of contractile states and wrist postures and fit these outputs to a force estimation algorithm based on a musculoskeletal model.ResultsShear wave speed changed significantly upon several factors, including whether the muscle was recruited as an agonist or antagonist (p = 0.0019), torque amplitude (p = <0.0001), and wrist posture (p = 0.0002). Shear wave speed increased significantly during both agonist (p = <0.0001) and antagonist (p = 0.0448) contraction. Additionally, there was a greater increase in shear wave speed at greater levels of loading. The variations due to these factors indicate the sensitivity to functional loading of muscle. Under the assumption of a quadratic relationship between shear wave speed and muscle force, MRE measurements accounted for an average of 70% of the variance in the measured joint torque.ConclusionThis study shows the ability of MM-MRE to capture variations in individual muscle shear wave speed due to muscle activation and presents a method to estimate individual muscle force through MM-MRE derived measurements of shear wave speed.SignificanceMM-MRE could be used to establish normal and abnormal muscle co-contraction patterns in muscles of the forearm controlling hand and wrist function.
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