MeSH
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Angiography, Digital Subtraction

MeSH ID: D015901

DEFINITION: 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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adverse effects [Q000009] ; classification [Q000145] ; contraindications [Q000744] ; drug effects [Q000187] ; economics [Q000191] ; ethics [Q000941] ; history [Q000266] ; instrumentation [Q000295] ; methods [Q000379] ; mortality [Q000401] ; nursing [Q000451] ; psychology [Q000523] ; radiation effects [Q000528] ; standards [Q000592] ; statistics & numerical data [Q000706] ; trends [Q000639] ; utilization [Q000656] ; veterinary [Q000662]

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