Figure 1

Representative T1 mapping images. (a) A 48-year-old woman with persistent AF and hypertension and HFrEF. The image shows an apparent normal myocardium without evidence of late gadolinium enhancement (LGE) on the standard visual assessment; the left ventricular (LV) mean native T1 time is 1295 ms and postcontrast T1 time is 567 ms at mid-ventricular level, the ECV is 27.1%. (b) A 51-year-old man with paroxysmal AF and HFrEF. The image shows an apparent normal myocardium without evidence of LGE; the LV mean native T1 time is 1271 ms, and the postcontrast T1 time is 621 ms at the mid-ventricular level, the ECV is 27.4%. (c) A 75-year-old man with persistent AF, hypertension, and an HFrEF. The image shows LGE at the anterolateral segment; the LV mean native T1 time is 1311 ms, and the postcontrast T1 time is 453 ms at the basal level, the ECV is 31.4%. (d) A 65-year-old man with paroxysmal AF, diabetes, hypertension, and HFpEF. The image shows LGE at the inferoseptal segment; the LV mean native T1 time is 1300 ms, and the postcontrast T1 time is 538 ms at mid-ventricular level, the ECV is 30.0%.