Fig. 8.
Ablation study of accuracy and precision of model parameters estimation. Soma compartment signal fraction fis, soma apparent size rs and axial intra-neurite diffusivity Din estimated using relation Eq. (10) without the extra-cellular compartment and GPD approximation and labelled with the superscript “estimated” are plotted against the ground truth values labelled with the superscript “ground-truth” for four different b value combinations (subsampled from Experiment 2 with δ/Δ = 3/11 ms). The perfect positive correlation line is plotted as solid line. Error bars on data points indicate the statistical dispersion (standard deviation) in model parameter estimation as evaluated by Monte Carlo approach (2500 random drawn) in case of infinite SNR. The mean squared errors (MSE) with respect to the ground-truth values are reported for each b value combination as metrics of accuracy and precision (lower the value, higher the accuracy and precision).