NCIt 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.;