Calculation of Fractal Dimension in DSA Image Processing
Abstract
Purpose was the calculation of fractal dimensions of femoral artery angiogram after digital subtraction angiography (DSA). Material and methods. Fractal dimension of 49 images of femoral arteriogram in 31 patients after DSA was calculated. The fractal dimension was calculated geometrically. The geometric method consists in determining the dependence of the number of square cells of the object under study to its size, ie the scale. Preparation of the angiograph-ic images for fractal dimension calculation and its calculation was performed by means of E-film®, Adobe® Photoshop® CS2, Adobe® Illustrator® CS2, Fractal.exe and Microsoft® Excel®. Results. In the article step-by-step sequence of preparing of an angiographic images for calculation its fractal dimension by using available software for IBM PC was developed. The limits of the scale of consideration in the light of the stochastic nature of the fractal structure of angiographic images of the femoral arteries were identified. Conclusion. Fractal dimension allows quantify collateral arteries in DSA images postprocessing.
About the Authors
Vladimir Nikolaevish Tsygankov
A.V. Vishnevskiy Institute of Surgery
Russian Federation
Russian Federation
Andrey Ilyich Goncharov
A.V. Vishnevskiy Institute of Surgery
Russian Federation
Russian Federation
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Review
For citations:
Tsygankov V.N., Goncharov A.I. Calculation of Fractal Dimension in DSA Image Processing. Medical Visualization. 2014;(1):118-123. (In Russ.)
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