Oxygen 15-labeled Carbon Monoxide

**Semantic type:** Pharmacologic Substance

**Definition:** A radiopharmaceutical comprised of oxygen-15 (15O)-labeled carbon monoxide (15O-CO) for use as a tracer molecule during positron emission tomography (PET). Upon inhalation, 15O-CO binds to hemoglobin in the blood and the labeled red blood cells distribute evenly throughout the vasculature in the body. Upon PET imaging, tissue blood volume can be quantified.

**Synonyms:** - (15)O-labeled Carbon Monoxide - C(15)O - CO-15 - O15 Carbon Monoxide - Oxygen-15 Labeled Oxygen Gas - [(15)O]CO - [15O]Carbon Monoxide