Digital angiography.
The many available methods of digital subtraction angiography (DSA) are briefly reviewed. At present the most commonly used are temporal filtration techniques, which include conventional subtraction, integrated remasking , and various types of filtering. Their present use in intravenous, as well as intra-arterial, DSA is shown. The "moving mask" subtraction technique for cardiac and coronary studies is of particular interest. The current status of second-order subtraction techniques such as tomographic DSA and parametric digital imaging is presented. The latter method is particularly useful for demonstration of shunts. Finally, several examples of non-angiographic and future applications of digital radiography are presented.
D000792:Angiography / Q000379:methods*; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D003201:Computers; D003287:Contrast Media / Q000008:administration & dosage; D005544:Forecasting; D006499:Hepatic Artery / Q000000981:diagnostic imaging; D006801:Humans; D007269:Injections, Intra-Arterial; D007275:Injections, Intravenous; D007830:Larynx / Q000000981:diagnostic imaging; D011859:Radiography; D011877:Radionuclide Imaging; D013382:Subtraction Technique; D014057:Tomography, X-Ray Computed
D003287:Contrast Media