Discussion
Which radiopharmaceutical product is used for the diagnosis of diseases of the placenta and study of cardiac blood pool ?
Answer: B
The radiopharmaceutical is indium chloride.
Indium chloride labelled with the short-lived isotope indium-113m is listed among radiopharmaceuticals for localising the placenta and for imaging the cardiac blood pool. Injected, it binds to transferrin in the plasma and stays within the blood, so it outlines large pools of blood such as the placenta and the heart chambers.
The other three are ordinary inorganic preparations, not radioactive diagnostics: ammonium bromide is a sedative salt, calcium chloride solution is a calcium supplement, and ferric chloride solution is an astringent and laboratory reagent.
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