Fig. 2

Bland–Altman plot for V_T calculated using PBIFs versus using the original ppIFs. V_Ts were calculated using 90-min datasets. The colour scale depicts ROI (a, top) or participant identification (b, bottom). The dash ovals identify participants with large differences in V_T, with their age in years (the median age of participants was 35 years, interquartile range 26–50 years, range 20–62 years). antid., on antidepressants