For an exercise stress echocardiogram (echo) test, the sonographer will take pictures of your heart using echocardiography before you exercise and as soon as you finish.

A sonographer (a person who specializes in using ultrasound techniques) will apply gel to your chest. Then, he or she will briefly put a transducer (a wand-like device) against your chest and move it around.

The transducer sends and receives high-pitched sounds that you probably won’t hear. The echoes from the sound waves are converted into moving pictures of your heart on a screen.