Fig. 10.

Crossing-fibre angular resolution: plot of crossing-angle (horizontal axis) against target FA (vertical axis) for SNR = 50 data over a range (C = 0.3, C = 0.6 and C = 0.9) of calibrations; colour indicates probability of successful fODF peak retrieval (scaled 0–1). (A) CSD results at Lmax = 8. Notice that best-case angular resolution is achieved at C = T then sharply drops as C exceeds T and gradually falls off as T exceeds C. (B) dRL results at iter = 200. Notice that for all cases C = 0.9 is the optimal choice, reduction in calibration anisotropy leads to a near linear reduction in angular resolution and there is a marked decrease in angular resolution as target anisotropy falls.