Table 2.

CMR parameter for risk stratification of SCD and their limitations.

	Characteristics	Limitations
LGE	Evidence of myocardial scar extension, pattern and localization as risk predictor for VA/SCD	Contraindication of the use of contrast in renal insufficiency Heterogenicity of the methods for evaluating and quantifying LGE Limited predictive power for VF/polymorphic VT
T1 mapping/ECV	Quantification of myocardial fibrosis, oedema and fat accumulation Use regardless renal function Higher native T1 values are associated with arrhythmic events	Measurement variability due to heart rate, magnetic field strength and specific CMR protocol Data acquisition susceptibility to motion artefact, inadequate breath holding, amount and speed of contrast injection T1/ECV values influenced by oedema, infiltrative disease and inflammation
Strain imaging	Evaluation of regional myocardial dysfunction and deformation	Underestimation due to low temporal resolution Cut-off values variability Lack reliability of the radial and segmental strain values

LGE: Late gadolinium enhancement. ECV: extracellular volume. VA: ventricular arrhythmias. SCD: sudden cardiac death. VF: ventricular fibrillation. VT: ventricular tachycardia. CMR: cardiac magnetic resonance.