Fig. 4From: Neurofilament levels, disease activity and brain volume during follow-up in multiple sclerosisBrain parenchymal fraction in patients at baseline and during follow-up. Brain parenchymal fraction (BPF) in patients at baseline (BL) and at 1 year (1y), 2 years (2y), and 4 years (4y) of follow-up. **p ≤ 0.01 in repeated measures ANOVA with Bonferroni correction for multiple comparisons. ns: not significantBack to article page