Improving the Concentration of MR Contrast in the Arteries

Normally an IV is placed in an arm and the gadolinium contrast (30-40 cc, depending on patient size) is administered through the IV with a power injector as a single bolus. Subjects will have a test bolus and main bolus.

"Normally an IV is placed in an arm and the gadolinium contrast (30-40 cc, depending on patient size) is administered through the IV with a power injector as a single bolus. Subjects will have a test bolus and main bolus. We will use a mathematical algorithm to rapidly analyze the test bolus and calculate a predicted best way to inject the main bolus - likely slower and multi-phasic, meaning different flow rates as the bolus injection evolves."