Figure 1

Phase-contrast velocity images all displayed at same window and level settings. (a) Top row: Cine frames at start of the prospectively triggered cine. Middle row: During the frames with RF disabled but continuing gradient activity. Bottom row: Frame 31 onward with RF re-enabled. (b) Top row is two cine frames of a triggered cine acquisition at one raw data line per cardiac cycle per frame (“non-segmented”), where fat and muscle exhibit different variations. The bottom row shows that acquiring multiple phase-encode lines per cardiac cycle largely transmutes background instability into phase-encode ghosting.