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Cardiac PET (or cardiac positron emission tomography) is a form of diagnostic imaging in which the presence of heart disease is evaluated using a PET scanner. Intravenous injection of a radiotracer is performed as part of the scan. Commonly used radiotracers are Rubidium-82, Nitrogen-13 ammonia and Oxygen-15 water. [1]
A physician may recommend cardiac imaging to support a diagnosis of a heart condition. Medical specialty professional organizations discourage the use of routine cardiac imaging during pre-operative assessment for patients about to undergo low or mid-risk non-cardiac surgery because the procedure carries risks and is unlikely to result in the change of a patient's management. [1]
Positron emission tomography (PET) [1] is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes in metabolic processes, and in other physiological activities including blood flow, regional chemical composition, and absorption.
Before a PET scan begins, the patient will be injected with a small dose of a radioactive medicine tagged to a tracer such as glucose or oxygen. Therefore, if the purpose of the PET scan is to determine brain activity, FDG or fluorodeoxyglucose will be the medicine used. FDG is a complex of radioactive fluorine that is tagged with glucose.
Symptoms include chest pain or angina, shortness of breath, and fatigue. [6]A completely blocked coronary artery will cause a heart attack. [6] Common heart attack symptoms include chest pain or angina, pain or discomfort that spreads to the shoulder, arm, back, neck jaw, teeth or the upper belly, cold sweats, fatigue, heartburn, nausea, shortness of breath, or lightheadedness.
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U.S. health officials on Friday lifted curbs on reimbursement of a non-invasive imaging test called amyloid PET used to diagnose Alzheimer's, ending a once-per-lifetime limitation that clears the ...
Importantly, 82 Rb PET also seems to provide prognostic value in patients who are obese and whose diagnosis remains uncertain after SPECT-MPI. 82 Rb myocardial blood flow quantification is expected to improve the detection of multivessel coronary heart disease. [9] 82 Rb/PET is a valuable tool in ischemia identification. Myocardial Ischemia is ...
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