Fig. 2. The measurement of ECV. A-D: Native T1 map (A), enhanced T1 map (B), generate ECV images (C), the distribution coefficient λ generates the image (D); red circle marks the endocardium, green circle marks the epicardium, ROI (yellow) marks the blood pool, ROI (pink) marks the non-myocardial infarction sites, ROI (blue) marks the myocardial infarction site. ECV = extracellular volume, ROI = region of interest.