Some degree of apprehension or fear is normal and should be expected. This discomfort disappears when the test is completed. You may also feel uncomfortable for a short while if small, enclosed space causes you discomfort. X-ray or instant film. Description of test You or a close relative will be required to sign a consent form after the procedure has been explained to you.
Skin is cleaned with antiseptic.
A detector positioned above your chest records the circulation of the tracer through the heart. The tracer poses no radiation hazard and rarely produces side effects. Multiple images of your heart are made. Follow technician's instructions regarding positions while you are under the scanner. The scintillation camera or scanner detects rays emitted from the radioactive chemical injected into your body.