Table 2.

CMR diagnostic criteria for myocarditis [24].

Diagnostic Target	Lake Louise Criteria
Myocardial Edema	T2-weighted imaging, Increased Bright signal Intensity
Myocardial Injury -Hyperemia (intracellular/extracellular edema, capillary leak). -Myocardial Necrosis, Scar formation.	-Increased global early gadolinium enhancement ratio between myocardium and skeletal muscle. -At least one focal lesion with non-ischemic regional distribution on late gadolinium enhancement.
Supportive Criteria	-Pericardial Effusion. -Systolic Left ventricular (LV) wall motion abnormality.
If 2 Lake Louise Criteria are positive, CMR is considered indicative of active myocardial inflammation.