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. The scintillation camera or scanner detects rays emitted from the radioactive chemical.