Variability and homogeneity of cardiovascular magnetic resonance myocardial T2-mapping in volunteers compared to patients with edema. - Wassmuth R; Prothmann M; Utz W; Dieringer M; von Knobelsdorff-Brenkenhoff F; Greiser A; Schulz-Menger J (Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance, 2013)