Fig. 1.

Native and post-contrast T₁-maps in healthy volunteers, HFpEF, and post-MI patients. First and second rows, basal short-axis native (a, d), post-gadofosveset (b), post-gadobutrol (e) T₁-maps and LGE image (c, f) in two healthy volunteers. The region-of-interest (ROI) was traced within the basal interventricular septum in all volunteers and patients. Third and fourth rows, in HFpEF and post-MI patients, respectively, show basal short-axis native (g, l), post-gadofosveset (h, m), post-gadobutrol (I, n) T₁-maps, and LGE images (k, o). In the HFpEF patient (third row), non-ischemic scars (red arrow in K) was included in the septal ROI for the calculation of IVV and ECV. In post-MI patients (bottom row), a second ROI was traced within the ischemic scar taking as reference the LGE image (o, with red arrows indicating the scar)