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首页> 外文期刊>Ultrasound in Medicine and Biology >Computational evaluation of the compositional factors in fracture healing affecting ultrasound axial transmission measurements.
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Computational evaluation of the compositional factors in fracture healing affecting ultrasound axial transmission measurements.

机译:骨折愈合中影响超声轴向传输测量的组成因素的计算评估。

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摘要

This work aimed at computationally evaluating the compositional factors in fracture healing affecting ultrasound axial transmission (UAT), using four numerical daily-changing healing models, representing more realistic clinical conditions. Using two-dimensional (2-D) simulations, a 1-MHz source and a receiver were positioned parallel to the bone surface to detect the first arriving signal (FAS). The time-of-flight of the FAS (TOF(FAS)) was found to be sensitive only to superficial modifications in the propagation path. It was also shown that callus mature bone better explained alone the variation in TOF(FAS) (R(2) >or= 0.70, p < 0.001). Better TOF(FAS) predictions are obtained when using the callus composition inside cortical fracture gap (R(2) = 0.98, p < 0.01). Callus composition could not well explain the changes in energy attenuation. These results suggest that UAT may be an important clinical tool for fracture healing assessment, identifying callus degree of mineralization and possible consolidation delays and nonunions.
机译:这项工作旨在通过使用四个数值日变化的愈合模型来计算评估骨折愈合中影响超声轴向传输(UAT)的组成因素,这些模型代表了更为现实的临床状况。使用二维(2-D)模拟,将1 MHz的源和接收器平行于骨骼表面放置,以检测第一个到达信号(FAS)。发现FAS的飞行时间(TOF(FAS))仅对传播路径中的表面变化敏感。还显示,单独的愈伤组织成熟骨可以更好地解释TOF(FAS)的变化(R(2)>或= 0.70,p <0.001)。当在皮质骨折间隙内使用愈伤组织成分时,可以获得更好的TOF(FAS)预测(R(2)= 0.98,p <0.01)。愈伤组织的组成不能很好地解释能量衰减的变化。这些结果表明,UAT可能是评估骨折愈合,确定骨call的矿化程度以及可能的固结延迟和骨不连的重要临床工具。

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