Phase-encoding strategy. ky is shown left/righ. Acquired and unacquired ky lines are depicted by the small filled and unfilled dots, respectively. The data shot in which each ky line is acquired as shown as ●, and... . Two partial- Fourier excitations are acquired per shot. The regions of variable segmentation are illustrated in one shot where the phase-encoding skips 3, 4, or 6 ky lines during the segment. Final k-space data is shown at the bottom of the figure.