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Determination of bone mineral volume fraction using impedance analysis and Bruggeman model

机译:使用阻抗分析和Bruggeman模型确定骨矿物质体积分数

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Measurements by impedance spectroscopy and Bruggeman effective medium approximation model were employed in order to determine the mineral volume fraction of dry bone. This approach assumes that two or more phases are present into the composite: the matrix (environment) and the other ones are inclusion phases. A fragment of femur diaphysis dense bone from a young pig was investigated in its dehydrated state. Measuring the dielectric properties of bone and its main components (hydroxyapatite and collagen) and using the Bruggeman approach, the mineral volume filling factor was determined. The computed volume fraction of the mineral volume fraction was confirmed by a histogram test analysis based on the SEM microstructures. In spite of its simplicity, the method provides a good approximation for the bone mineral volume fraction. The method which uses impedance spectroscopy and EMA modeling can be further developed by considering the conductive components of the bone tissue as a non-invasive in situ impedance technique for bone composition evaluation and monitoring.
机译:为了确定干骨的矿物质体积分数,采用了阻抗谱法和布鲁格曼有效介质近似模型进行的测量。该方法假定复合物中存在两个或多个阶段:基质(环境),其他阶段为包含阶段。研究了处于脱水状态的一头年幼猪的股骨干physi端密集骨的片段。测量骨骼及其主要成分(羟基磷灰石和胶原蛋白)的介电性能,并使用Bruggeman方法确定矿物质的体积填充因子。通过基于SEM微结构的直方图测试分析来确认计算出的矿物体积分数的体积分数。尽管简单,但该方法仍为骨矿物质的体积分数提供了良好的近似值。通过将骨组织的导电成分视为一种用于骨成分评估和监测的非侵入性原位阻抗技术,可以进一步开发使用阻抗谱和EMA建模的方法。

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