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Box plot diagrams showing signal intensity in the different areas of assessment. Pre- (white) and post-contrast (grey) semi-quantitative SI values in arbitrary units (a) and qualitative (visual) SI score (b). Median (25th–75th percentile). N = 19 except for analyses on perivenous spaces where there were three patients missing.
SCPS: superficial cortical perivenous spaces; SI: signal intensity; SSS: superior sagittal sinus.
