Effect of micro-ct slice intensity on natural vibration behavior of cancellous bone models based on reverse engineering techniques

Identification of natural vibration properties of bone structure in macro and micro levels is important because of increasingly vibration inclusion of current methods in recognition and treatment of bone diseases. In this scope, results which are obtained from non-destructive reverse engineering approaches are crucial especially in living tissue studies. The results may differ from each other because of the multi-staged methods and differences in constituted models due to the redundancy of options. In this paper, effect of differences due to the slice intensity on natural vibration analysis results by using constant resolution Micro-Computational tomography (Micro-CT) data of L3 vertebrae in voxel based finite element models are investigated. In addition to this investigation, another approach which is different from classic approach where non-cubic voxel based finite elements can be generated and only about the effect of slice thickness and cubic voxels is improved. The results obtained from the study show that solutions of proposed model are more conservative than the results of voxel based finite element (V-FEM) and these results are purified from the effects of element aspect ratio