Welcome to the Shick Heart Center
Echocardiogram - This is an ultrasound of the heart. It will help to evaluate how the heart muscle and heart valves are functioning. Gel and a small probe are used on the chest wall to assist in the transmission of a sonographic image of the heart (pictured below). It is sometimes necessary for the technician to use a special lipid based contrast to assist in providing your physician with a clear picture of your heart. 
If this is necessary, the contrast will be injected into a vein in your hand or lower arm. Generally, minimal or no preparation is necessary for this procedure.
For more information about Heart Disease, Diagnosis and Treatments visit the American Heart Association Website