Cardiac functional magnetic resonance imaging at 7T: Image quality optimization and ultra-high field capabilities

Figure 7 Strain analysis throughout the whole cardiac cycle at 7T cardiovascular magnetic resonance. A: A series of tagged images acquired at different timepoints of a mid-ventricular short-axis slice throughout a 1200 ms cardiac cycle, showing tagging persistence until the last timeframe (arrows), which allows for measuring strain throughout end-diastole, which is not feasible at low magnetic field strength where the tagging pattern fades before the end of the cardiac cycle; B: Circumferential strain curves showing strain evolution throughout the whole cardiac cycle in different left-ventricular myocardial segments of the slice in (A). Segments are numbered according to American Heart Association 17-segment model.