Perfusion scanning
Perfusion Scanning
Perfusion scanning (pronunciation: per-fu-sion scan-ning) is a medical imaging technique used to evaluate the blood flow in the body's tissues and organs.
Etymology
The term 'perfusion' originates from the Latin word 'perfusio', meaning 'to pour over or through'. 'Scanning' is derived from the Old Norse 'skanna', which means 'to search or examine'.
Procedure
Perfusion scanning involves the injection of a radioactive tracer into the bloodstream. A special camera, known as a gamma camera, is then used to capture images of the tracer as it travels through the blood vessels and into different tissues and organs. This allows doctors to assess the blood flow and detect any abnormalities, such as blockages or reduced blood flow, which could indicate conditions like heart disease or stroke.
Types of Perfusion Scanning
There are several types of perfusion scanning, including:
- Myocardial perfusion scan: This is used to evaluate the blood flow to the heart muscle (myocardium). It can help diagnose conditions such as coronary artery disease and heart attack.
- Brain perfusion scan: This is used to assess blood flow in the brain. It can help diagnose conditions such as stroke or brain tumor.
- Lung perfusion scan: This is used to evaluate blood flow in the lungs. It can help diagnose conditions such as pulmonary embolism.
Related Terms
- Radioactive tracer
- Gamma camera
- Medical imaging
- Heart disease
- Stroke
- Coronary artery disease
- Heart attack
- Brain tumor
- Pulmonary embolism
External links
- Medical encyclopedia article on Perfusion scanning
- Wikipedia's article - Perfusion scanning
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