Figure 1.

MR images (7.0/2.3, 15° flip angle) of an in vivo human heart of a healthy 30-year-old male volunteer obtained with the parallel-tagging and -imaging protocol. The progression (from left to right) through three phases in the cardiac cycle is shown: early, middle, and late systole. Two cardiac short-axis images and one long-axis image are shown; each displays tag lines from a different set of mutually orthogonal tag planes.