Fig. 1
Left: Example of left atrial (LA) tissue tracking in still frames of cine cardiovascular magnetic resonance (CMR) (balanced steady-state free precession imaging) four chamber (left top) and two chamber (left bottom) cine loops. Right: Longitudinal strain with two peaks representing reservoir (ℇR) and contractile (ℇCT) strain. The difference between the two measurements is conduit strain (ℇCD)