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DeCS
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Descriptor English:
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Angiography, Digital Subtraction
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Descriptor Spanish:
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Angiografía de Substracción Digital
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Descriptor Portuguese:
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Angiografia Digital
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Synonyms English:
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Digital Subtraction Angiography
Subtraction Angiography, Digital
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Tree Number:
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E01.370.350.600.350.700.060
E01.370.350.700.060.060
E01.370.350.700.700.060
E01.370.350.760.060
E01.370.370.050.060
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Definition English:
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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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History Note English:
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90
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Allowable Qualifiers English:
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Record Number:
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24518
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Unique Identifier:
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D015901
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Occurrence in VHL:
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Similar:
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DeCS
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