Alternative framework 1 Blood Vessels 1 Data Interpretation, Statistical 1 First-order statistics 1 Fractals 1 Graphic methods 1 Humans 1 Liver Normalized histograms 1 Number of branches 1 Power law distribution 1 Power-law parameters 1 Speckle statistics 1 Theoretical formula 1 Tissue 1 Ultrasonography 1 article 1 blood vessel 1 controlled study 1 diagnostic imaging echography 1 fractal analysis 1 histogram 1 human liver 1 liver scintiscanning 1 parenchyma 1 procedures 1 statistical analysis 1 theoretical study 1