MEDICINE
CARDIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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false
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Either A or B
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None of the above
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Detailed explanation-1: -Mechanism of action It is rapidly extracted by the myocardium proportional to blood flow. Its radioactivity is increased in viable myocardial cells reflecting cellular retention, while the tracer is cleared rapidly from necrotic or infarcted tissue.
Detailed explanation-2: -Rubidium Rb 82 injection is used in adults to help diagnose heart disease. It is used in a procedure called a positron emission tomography (PET) scan to help your doctor see an image of your heart. This medicine shows how much blood is getting to your heart muscle when you are resting or exercising (stressed).
Detailed explanation-3: -PET perfusion tracers used clinically for MPI are rubidium (Rb)-82 and nitrogen (N)-13-ammonia. Rb is eluted from a generator and has a short half-life of 78 seconds. It is only used with pharmacologic stress and not exercise, which is a limitation.