Figure 1 Dynamic AcQTrack analysis assigns highlighted discs when each pattern is detected showing in pink for FF (A) characterised by radial activation from a central earliest point, green for LRA (B) where smooth rotational activation of >270° is observed; and yellow for LIA (C). LIA includes a range of specific patterns of activation, all characterised by changing wavefront direction of >90° (C-F, dynamic AcQTrack detection not shown). Colour scale depicts the leading (red) to trailing edge (purple) of a wavefront with the full colour spectrum occupying 80ms.