Left ventricular noncompaction in an infant: use of non-ECG-gated cardiac CT.

We report an infant who had left ventricular dysfunction of unknown etiology and was diagnosed with left ventricular noncompaction by non-ECG-gated cardiac CT. This relatively rare diagnosis, an unclassified cardiomyopathy, was confirmed by retrospective review of echocardiography on which the diagnosis had initially been missed. As in echocardiography, CT was capable of delineating the characteristic two-layered myocardium of the left ventricle with the most severe involvement of the apical segment.