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. 2020 Dec 16;3(1):e190199. doi: 10.1148/ryai.2020190199

Figure 3:

Jensen-Shannon divergence (JSD) distributions with and without brain extraction. Distribution of the JSD between the region of interest intensity histograms of the scan and rescan for the entire cohort using T2-weighted fluid-attenuated inversion recovery (T2W-FLAIR) (left) and T1-weighted (T1W) postcontrast (right) for not-normalized, z score–normalized, and histogram-matched images, each with (blue) and without (orange) brain extraction performed before normalization. For each normalization approach (no normalization, z score normalization, histogram-matched), the absence of brain extraction before normalization did not have a significant effect on the JSD.

Jensen-Shannon divergence (JSD) distributions with and without brain extraction. Distribution of the JSD between the region of interest intensity histograms of the scan and rescan for the entire cohort using T2-weighted fluid-attenuated inversion recovery (T2W-FLAIR) (left) and T1-weighted (T1W) postcontrast (right) for not-normalized, z score–normalized, and histogram-matched images, each with (blue) and without (orange) brain extraction performed before normalization. For each normalization approach (no normalization, z score normalization, histogram-matched), the absence of brain extraction before normalization did not have a significant effect on the JSD.