Fig. 1
a Example long-axis T1 maps and regions-of-interest (ROI) over the duration of a study, and typical T1 (intra-ROI mean ± SD) recovery profile post-contrast and the corresponding volume V′(t), calculated from Eq. 3, for the (b) left-ventricle (LV) and paired (c) right-ventricle (RV). A linear fit from 20 to 40 min (solid line) is used to measure the half-life of the contrast agent. The plasma volume can be estimated by extrapolating to the model to 0 min (dotted line)