Keywords
cerebellum
fractal analysis
fractal dimension
pixel dilatation
How to Cite
Abstract
A pixel dilatation method for the calculation of fractal index of the human cerebellum was developed according to magnetic resonance imaging. A fragment of a digital image (tomogram) of the cerebellum is used for the study. The images are calibrated and fragments are copied into the program Adobe Photoshop CS5, where a single digital image is created; the size and resolution (pixels per inch) are calculated according to the formula 2n, where n is the number of steps of the fractal dimension calculating. The image is contrasted and the background, blank, and filled pixels containing the fragments of the structure under study are counted step by step. The size of pixels is dilated at each stage and thus the image resolution is decreased (from 64 pixels per inch to 32, 16, 8, 4 and 2 pixels per inch). Taking into account the number of pixels containing fragments of the studied structure, and pixel sizes relative to the total image area (box size), the fractal dimension of the cerebellum is calculated.
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