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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.

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.


This graph shows the total number of publications written about "Angiography, Digital Subtraction" by people in Harvard Catalyst Profiles by year, and whether "Angiography, Digital Subtraction" was a major or minor topic of these publication.
Bar chart showing 195 publications over 31 distinct years, with a maximum of 15 publications in 2017
To see the data from this visualization as text, click here.
Funded by the NIH National Center for Advancing Translational Sciences through its Clinical and Translational Science Awards Program, grant number UL1TR002541.