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Exemplary boxplots of first-order features mean, median, root mean squared, entropy, and uniformity across the 10 repetitive scans. For the T1w MR images (A) and the T2w TIRM MR images (B), mean, median, and RMS showed no significant difference in the Mann–Whitney U-test, whereas entropy and uniformity were significantly different. For the CT images (C), the illustrated features did not show significantly different results, i.e., the features do not simulate significant differences.
