This discomfort disappears when the test is completed. You may also feel uncomfortable for a short while if small, enclosed space causes you discomfort. Equipment used I.V. equipment. Computerized gamma scintillation camera. 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.
Radioactive chemical is injected into a vein, usually in the arm. You may experience a brief period of flushing and nausea after the injection of chemical. Only a small amount of radioisotope is given. It's usually excreted within 24 hours. Follow the technician's instructions regarding positions while you are under the scanner.