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Digital subtraction angiography (DSA)

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Digital subtraction angiography


Digital subtraction angiography (DSA) is a fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. Images are produced using contrast medium by subtracting a "pre-contrast image" or mask from subsequent images, once the contrast medium has been introduced into a structure. Hence the term "digital subtraction angiography. Subtraction angiography was first described in 1935 and in English sources in 1962 as a manual technique. Digital technology made DSA practical starting in the 1970s.

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Wikipedia contributors. "Digital subtraction angiography." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, May 6, 2024.


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