TRANSESOPHOGEAL ECHOCARDIOGRAPHY (TEE)
Like a routine echocardiogram, TEE uses ultrasound to create images. TEE
images, however, are clearer because they are taken with a scope from
inside your body. Your doctor may order a TEE if the routine echocardiogram
cannot answer all of the questions about your heart's structure and
function. TEE involves passing a special ultrasound scope through your
mouth into your food pipe (esophagus) to take pictures.