<unk>  <unk>  is a radioactive isotope of<unk> .<unk>  is widely used in myocardial perfusion imaging. This isotope undergoes rapid uptake by myocardiocytes, which makes it a valuable tool for identifying myocardial ischemia in Positron Emission Tomography (PET) imaging.<unk>  is used in the pharmaceutical industry and is marketed as<unk>  chloride under the trade names RUBY-FILL and CardioGen-82.
Rubidium-82
Prussian blue 
Dotinurad
Nickel tetracarbonyl
SeHCAT
Phenylsilatrane
Helothermine
Selenium disulfide