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Angiography, Digital Subtraction

"Angiography, Digital Subtraction" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

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A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.


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This graph shows the total number of publications written about "Angiography, Digital Subtraction" by people in this website by year, and whether "Angiography, Digital Subtraction" was a major or minor topic of these publications.
Bar chart showing 27 publications over 17 distinct years, with a maximum of 3 publications in 2004 and 2011 and 2018
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