Digital Subtraction Angiography Subtraction Angiography, Digital
Vysvetľujúca pozn. v angl.
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.
Odkazy
(33) - ČLÁNKY
(6) - CiBaMed
(10) - KNIHY
predmetové heslo
Počet záznamov: 1
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