Digital subtraction angiography
From Wikipedia, the free encyclopedia
Digital subtraction angiography (DSA) is a type of fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. Images are produced using contrast medium by subtracting a 'pre-contrast image' or the mask from later images, once the contrast medium has been introduced into a structure. Hence the term 'digital subtraction angiography'.
Contents |
| Digital subtraction angiography | |
|---|---|
| Intervention | |
Example of iodine-based contrast in cerebral angiography | |
| MeSH | D015901 |
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