Extensive trabeculations within the left ventricle and thinning of the underlying compact myocardium.
Steady-state free precession cine images in diastole. Abnormal (> 2.3:1) of non compacted to compacted myocardium in diastole.
Subendocardial increased signal.
Late gadolinium enhancement image shows subendocardial enhancement consistent with fibrosis at the apex.