Cardiac magnetic resonance imaging contributing to primary prevention and secondary prevention of sudden cardiac death: Contemporary usefulness and limitations

Table 1 Relationship between cardiac magnetic resonance imaging findings and myocardial damages related to risk for sudden cardiac death or out-of-hospital cardiac arrest

	Primary prevention	Secondary prevention
Myocardial diseases	Chronic MI, sarcoidosis, HCM, DCM	Acute MI, CVS, acute myo-carditis, HCM
Cardiac MRI
Cine imaging	Systolic dysfunction, aneurysm, marked hypertrophy edema related to preceding syncope or chest pain scar related to reentry or slowing of active potential	Systolic dysfunction, marked thinning, marked hypertrophy, acute and transient arrhythmic, substrates such as edema and inflammation progressive myocardial damage
T2-weighed imaging
T1T2 mapping
LGE, ECV

Cardiac magnetic resonance imaging identifies myocardial damages related to the risk for sudden cardiac death or out-of-hospital cardiac arrest, which should be treated using implantable cardioverter defibrillator. MI: Myocardial infarction; HCM: Hypertrophic cardiomyopathy; DCM: Dilated cardiomyopathy; CVS: Coronary vasospasm; MRI: Magnetic resonance imaging; LGE: Late gadolinium enhancement; ECV: Extracellular volume fraction.