When you graph, don't try to plot loads of points. Note that the cosine is at y = 1 when x = 0 and 2Ï; at y = 0 for x = Ï/2 and 3Ï/2, and at y = â1 for x = Ï. Plot these five interesting points, and then fill in the curve.
Transesophageal echocardiogram. A transesophageal echocardiogram, or TEE (TOE in the United Kingdom, reflecting the spelling transoesophageal), is an alternative way to perform an echocardiogram. A specialized probe containing an ultrasound transducer at its tip is passed into the patient's esophagus.
A TEE is a special type of echocardiogram that takes pictures of the back of the heart through the esophagus (the tube leading from the mouth to the stomach). TEE also is often used to define complex heart defects. Catheter procedures also are sometimes used during surgery to help repair complex defects.