Closed reservoir system for angiography.

For many years , radiologists kept saline and contrast material in open basins for use during angiographic procedures . More recently , c losed systems have been advocated to avoid contamination by foreign bodies such as cotton fibers or talc [1, 2]. Such arrangements use intravenous sets hung on a trolley , which is often positioned behind the radiologist and requires that an assistant turn his back to the source of radiation in order to c lean and refill syringes. In doing so, he may inadvertently be irradiated unless he is wearing a double-sided lead apron . Furthermore, he is unable to observe the procedure simultaneously. The closed reservoir system described below allows continuous refilling of syringes with a minimum of effort, as well as making the reloading of the contrast pressure injector easier .