Fractal Dimension Analysis of PET-MRI Liver Images for Various ROI’s Sizes
Marta Borowska , Ewelina Bębas , Marcin Hładuński , Małgorzata Mojsak , Edward Stanisław Oczeretko
AbstractIn this study, a fractal analysis is applied to Magnetic Resonance Images (MRI) of the liver simultaneously to PET imaging. The analysis was performed to examine the influence of the size of the region of interest (ROI) in calculating the fractal dimension. MRI from 31 healthy subjects were used for analysis, several or a dozen frames from each, giving a total of 426 images. Five different algorithms of fractal dimension calculation (box-counting, rectangular prism surface area, power spectral density, triangular prism surface area and the intensity difference scaling) are tested. Two sizes of ROI’s were analyzed: \(128\times 128\) pixels and \(64\times 64\) pixels. The greatest similarities in the analyzed ROIs were obtained using the intensity difference scaling algorithm but others gave acceptable results.
|Publication size in sheets||0.5|
|Book||Korbicz Józef, Maniewski Roman, Patan Krzysztof, Kowal Marek (eds.): Current Trends in Biomedical Engineering and Bioimages Analysis: Proceedings of the 21st Polish Conference on Biocybernetics and Biomedical Engineering, Advances in Intelligent Systems and Computing, vol. 1033, 2020, Springer, ISBN 978-3-030-29884-5, [978-3-030-29885-2], 338 p., DOI:10.1007/978-3-030-29885-2|
|Keywords in English||fractal dimension, region of interest, PET-MRI|
|Internal identifier||ROC 19-20|
|Score||= 20.0, 11-03-2020, MonographChapterAuthor|
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