Cardiovascular magnetic resonance images showing left ventricular noncompaction

Cardiovascular magnetic resonance images (steady state free precession sequence) of a 22-year-old man diagnosed with heart failure at age three. Images are at end-diastole.
(A) Four-chamber image showing hypertrabeculation in the left ventricle. There are also increased trabeculations in the right ventricle. The thickness of noncompacted myocardium (blue) is greater than 2.3 times the thickness of compacted myocardium (red).
(B) Apical short-axis image also shows hypertrabeculation.