Fig. 2

CMR Diagnostic Criteria for LVNC. a CMR short-axis cine bSSFP image of the apical LV demonstrating severely thickened myocardium with prominent trabeculations and deep intertrabecular recesses in a 49-year-old female with a history of ventricular tachycardia and LVNC phenotype. b Measurement of the maximum non-compacted (NC): compacted myocardium diameter ratio. c Standard epicardial contours and endocardial contours at the border of the compacted and NC myocardium for measurement of the compacted myocardial mass. d Endocardial contours at the border of the NC myocardium and non-trabeculated cavity for measurement of the global myocardial mass (compacted and non-compacted myocardial mass). CMR = cardiovascular magnetic resonance; LVNC = left ventricular non-compaction cardiomyopathy; bSSFP = balanced steady-state free precession; LV = left ventricle