The scintillation camera or scanner detects rays emitted from the radioactive chemical injected into your body. Rays are converted into images displayed on a video screen for interpretation. Doctor and emergency equipment are in testing area at all times during test. Several areas on your chest and possibly your back are cleaned and shaved to prepare the skin for the electrodes. Electrode sites may itch slightly, but you won't feel any current from them.
Monitor is started.
Readings are taken with you in a resting condition. The pattern of the heartbeat segments recorded are compared to normal heartbeat patterns. Your blood pressure and heart rate are checked periodically. Treadmill starts at a slow speed with a flat incline. You walk on it, balancing on a support in front of you.