Figure 1From: T1 mapping for myocardial extracellular volume measurement by cardiovascular magnetic resonance: bolus only vs primed infusion techniqueCorrelation with histological collagen volume fraction in severe aortic stenosis. Both the bolus only technique (at 15 minutes) and the infusion techniques correlate well with CVF but the r2 value is higher with the infusion technique (0.56 vs 0.71).Back to article page