Table.

Echocardiographic criteria for left ventricular noncompaction

Authors	Criteria
1. Chin et al (21)	Presence of x/y < 0.5, where: X = distance from the epicardial surface to the trabecular recess; Y = distance from the epicardial surface to the peak of trabeculations. These criteria are applied to trabeculations of the left ventricular apex with subxiphoid or apical four-chamber views at the end of diastole.
2. Stollberger et al (22)	Presence of more than three trabeculations in the left ventricular wall, with the papillary muscles located at the apex, visible in one image plane Intertrabecular spaces, perfused from the ventricular cavity, viewed by color Doppler imaging
3. Jenni et al (9)	Absence of coexisting cardiac abnormalities Segmental thickening of the myocardial wall of the left ventricle with two layers: a thin epicardial layer and a thick endocardial layer with prominent trabeculations and deep recesses. The ratio of noncompacted myocardium to compacted myocardium at the end of systole is > 2:1.