Are there standardized, discrete cut-off values in T1/T2 mapping and extracellular volume fraction to aid in the diagnosis of various cardiomyopathies, or are these values largely scanner/institution specific?   

T1/T2 mapping and extracellular volume fraction (ECV) are advanced parametric mapping MRI techniques increasingly used in the diagnosis and tissue characterization of different cardiac pathologies. However, the standardization of cut-off values for these parameters remains a challenge. These values ...