Evaluation of a Novel Method of Contrast Volume Quantification - The AVERT PLUS

Thirty consecutive subjects who consent to participate and are undergoing planned angiography will be enrolled. The AVERT PLUS is a system which is external to the patient and connected to the control syringe that the physician uses to deliver the contrast dye to the patient. For each injection that the physician performs, the starting syringe volume, the ending syringe volume, and the net contrast delivered to the patient will be recorded. At the same time, the net volume delivered to the patient will also be recorded from the AVERT PLUS console. For each injection, these two sets of variables will be compared to determine accuracy of the AVERT PLUS to quantify net contrast volume used.