Figure 2

(A, B) Cumulative averages (1-8) of FA for the LV and the RV, respectively. (A) In the LV, FA values stabilize after 5 averages in diastole as well as in systole. (B) In the RV, FA also stabilizes after 5 averages, albeit with a higher standard deviation in diastole, but FA values are 9% lower in diastole than in systole. (C, D) Transmural distribution of HA for 1, 4, and 8 cumulative averages in diastole and systole, respectively. For optimal estimation of HA, 8 averages are required since the HA is a function of the primary eigenvector, and more degrees of freedom need to be estimated.