This study is designed to evaluate the technical performance and clinical handling of a
coronary catheter that includes two imaging techniques. The catheter being evaluated performs
near infrared spectroscopy and ultrasound imaging of the coronary arteries. Near infrared
spectroscopy is used to identify lipid or cholesterol deposits in the vessel wall and the
ultrasound component provides structural information about the vessel. Combining multiple
imaging techniques into a single catheter can reduce the total number of catheters required
during treatment and the overall duration of cardiac catheterization. Both of these results
may lead to safer procedures.