| http://www.w3.org/ns/prov#value | - If this is a problem, the sonographer may inject a small amount of liquid (contrast) through an IV to better see the inside of the heart.Rarely, more invasive testing using special echocardiography probes may be needed.TRANSESOPHAGEAL ECHOCARDIOGRAM (TEE)The back of your throat is numbed and a scope is inserted down your throat.On the end of the scope is a device that sends out sound waves.
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