Coefficients of variation for ADCexp and K of tNAA, calculated (A, C) in VOIPCC and (B, D) in VOICR, from a bootstrapping subsampling procedure. The datasets from each subject and session were randomly resampled with replacement prior to averaging. Each subset consisted respectively of 10, 15, 20, 25, 30, 35 and 40 averages per diffusion condition. ADCexp were estimated from different diffusion-weighting schemes: b[0,1,2], b[0, 2] and b[0,1]. K were estimated using all b-values (scheme b[0–3]).