In this study, we investigated methods of reconstructing higher-resolution three-dimensional (3D) pattems of real electrical tree pauems. We studied two kinds of reconstruction methods, and both methods were applied to the same specimen. One method is a mechanical preparation of serial cross sections and the other is a computerized tomography method using projections.Furthermore. to examine the fractal properlies of reconstructed 3D tree pattems, the fractal dimension of their patterns was estimated by means of a box counting method.The results showed that both methods can reconstruct 3D elecmcal tree pattem accurately and the obtained pattems have fractal properties.

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