About The Medical Condition Subtraction Angiography, Digital
Find the definition of the medical term Subtraction Angiography, Digital. Subtraction Angiography, Digital defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Subtraction Angiography, Digital
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What's The Definition Of The Medical Condition Subtraction Angiography, Digital?
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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