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Fig. 2. —Ln-ln plot of M({epsilon}) versus {epsilon} shows large range of thresholds (5-60% of maximal pixel intensity with 5% increments) for three typical sets of images. All curves are highly nonlinear, leading to ambiguous determination of fractal dimension. In contrast, data within small range of 15-35% thresholds are highly linear as shown by dotted lines. + = patient 7, o = patient 12, x = patient 14. M = measure, {epsilon} = scale.





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