FIRST PASS RADIONUCLIDE ANGIOGRAPHIES Meaning and
Definition
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First Pass Radionuclide Angiography (FPRA) is a medical imaging technique used to visualize and assess blood flow through the heart and blood vessels. It involves the injection of a small amount of a radioactive substance called a radionuclide into the bloodstream, which then emits gamma rays that are detected by a specialized camera.
During the procedure, the patient lies down and a gamma camera is positioned above or below the patient's chest. The radionuclide is injected intravenously, and as it circulates through the bloodstream, the gamma camera captures images at various time intervals to create a video-like sequence known as a cine-loop. This allows doctors to visualize the dynamic movement of blood through the heart and vessels in real-time.
First Pass Radionuclide Angiography is commonly used to evaluate cardiac function, detect abnormalities in blood flow, and quantify cardiac output. It can help diagnose conditions such as coronary artery disease, heart valve disorders, and congenital heart defects. By analyzing the images and assessing blood flow patterns, doctors can identify areas of restricted blood flow, blockages, or abnormal shunting of blood.
The procedure is relatively safe, with minimal risk of allergic reactions or side effects. However, some patients may experience mild discomfort at the injection site or claustrophobia during the examination. FPRA is non-invasive and provides valuable information about cardiac function without the need for more invasive techniques like catheterization. Overall, First Pass Radionuclide Angiography is a useful tool in cardiology for assessing blood flow dynamics and diagnosing various heart conditions.
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