Can cardiomyopathy be diagnosed with an echocardiogram?

Cardiomyopathy: Please see this site: http://www.Nhlbi.Nih.Gov/health/health-topics/topics/cm/diagnosis.Html. "how is cardiomyopathy diagnosed?" is a very good nih article. An echocardiogram is one of the things that is used to diagnose cardiomyopathy.

Yes, it is a useful : The echocardiogram will show the usual findings of cardiomopathy.

Cardiomyopathy: The best answer is partly. A cardiomyopathy is a weakness in the heart muscle causing the heart not to pump normally. This can be seen on an echo, however, you can't tell whether the weakness in the heart muscle is due to damage from heart disease or a weakness in the muscle. The other way to diagnose a cardiomyopathy is by a cardiac catheterization.