ECG leads will be attached to your chest. Ultrasound gel will be applied to your chest and the technologist will use an ultrasound probe to acquire the necessary imaging. After these resting images are obtained, you will be asked to walk on the treadmill. The speed and incline will start low and gradually increase until you feel that you cannot continue. Once the treadmill is stopped, you will be asked to quickly return to the exam bed to take images of your heart as it is exercising.