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<p><b>New page</b></p><div>'''Perfusion scanning''' is a [[medical imaging]] technique used to evaluate the blood flow in the body's tissues. It is often used in the diagnosis of various conditions, such as [[pulmonary embolism]] and [[coronary artery disease]].<br />
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== Overview ==<br />
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Perfusion scanning involves the injection of a [[radioactive]] tracer into the bloodstream. This tracer travels through the blood vessels and emits radiation that can be detected by a special camera. The camera creates images that show how the tracer is distributed in the body, which can provide information about blood flow to different tissues.<br />
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== Uses ==<br />
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Perfusion scanning is used in a variety of medical contexts. It can be used to evaluate blood flow to the heart, lungs, brain, and other organs. It is often used in conjunction with other imaging techniques, such as [[computed tomography]] (CT) or [[magnetic resonance imaging]] (MRI), to provide a more complete picture of a patient's condition.<br />
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=== Cardiac Perfusion Scanning ===<br />
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In [[cardiology]], perfusion scanning is used to detect areas of the heart that may not be receiving enough blood due to blockages in the coronary arteries. This can help diagnose coronary artery disease and guide treatment decisions.<br />
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=== Pulmonary Perfusion Scanning ===<br />
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In [[pulmonology]], perfusion scanning is used to detect blood clots in the lungs (pulmonary embolism). The scan can show areas of the lungs that are not receiving blood due to a clot.<br />
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=== Brain Perfusion Scanning ===<br />
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In [[neurology]], perfusion scanning is used to evaluate blood flow to the brain. This can help diagnose conditions such as [[stroke]] or [[brain tumor]].<br />
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== Risks ==<br />
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As with any medical procedure, there are risks associated with perfusion scanning. These include allergic reactions to the tracer, radiation exposure, and false-positive or false-negative results. However, the benefits of perfusion scanning often outweigh these risks, especially when it is used to diagnose serious conditions.<br />
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== See Also ==<br />
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* [[Medical imaging]]<br />
* [[Computed tomography]]<br />
* [[Magnetic resonance imaging]]<br />
* [[Pulmonary embolism]]<br />
* [[Coronary artery disease]]<br />
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[[Category:Medical imaging]]<br />
[[Category:Cardiology]]<br />
[[Category:Pulmonology]]<br />
[[Category:Neurology]]<br />
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