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Descriptor English: Angiography, Digital Subtraction
Descriptor Spanish: Angiografía de Substracción Digital
Descriptor angiografía por substracción digital
Scope note: Método para delinear los vasos sanguíneos por substracción de una imagen del fondo tisular de la imagen de tejido más el material de contraste intravascular que atenúa los fotones de rayos X. La imagen del fondo se determina con una imagen digitalizada tomada pocos momentos antes de la inyección del material de contraste. El angiograma resultante es una imagen de alto contraste del vaso. Esta técnica de substracción permite la extracción de una señal de gran intensidad a partir de la información sobrepuesta del fondo. Por tanto, la imagen es el resultado de la absorción diferencial de los rayos x por los diferentes tejidos.
Descriptor Portuguese: Angiografia Digital
Descriptor French: Angiographie de soustraction digitale
Entry term(s): Digital Subtraction Angiography
Subtraction Angiography, Digital
Tree number(s): 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
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D015901
Scope note: 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.
Allowable Qualifiers: AE adverse effects
CL classification
DE drug effects
EC economics
ES ethics
HI history
IS instrumentation
MO mortality
MT methods
NU nursing
PX psychology
RE radiation effects
SN statistics & numerical data
ST standards
TD trends
VE veterinary
Previous Indexing: Angiography (1980-1989)
Subtraction Technique (1980-1989)
Public MeSH Note: 90
History Note: 90
Entry Version: DS ANGIOGR
DeCS ID: 24518
Unique ID: D015901
NLM Classification: WG 141.5.A3
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 1990/01/01
Date of Entry: 1989/05/15
Revision Date: 2008/07/08
Angiography, Digital Subtraction - Preferred
Concept UI M0024333
Scope note 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.
Preferred term Angiography, Digital Subtraction
Entry term(s) Digital Subtraction Angiography
Subtraction Angiography, Digital



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