The use of a constant pressure pump for maintaining the patency of catheters and needles during angiography.
D000792:Angiography / Q000295:instrumentation*; D002339:Carotid Arteries; D002404:Catheterization / Q000295:instrumentation*; D005263:Femoral Artery; D007267:Injections; D008722:Methods; D009339:Needles; D011312:Pressure