Definition: A clad coin is one that has multiple layers of metal in it; most current U.S. clad coins consist of an inner core of copper, with outer layers of a silver-colored nickel-copper alloy. Examples of this type of clad coin are the U.S. Dime, Quarter, and Half Dollar.
âChronic Total Occlusion Intervention. Chronic total occlusion (CTO) is a complete blockage of a coronary artery that has been in place for 30 days or longer. CTOs are very common, occurring in 15 to 20 percent of patients with significant coronary artery disease. The condition can cause severe angina (chest pain) and lead to a lower quality of life.
CTA (Computed Tomography Angiogram) What is a CTA (Computed Tomography Angiogram) and what does it do? CTA stands for Computed Tomography Angiogram. Though it can be used to describe any CT scan where IV contrast is given during scanning, it usually refers to the scanning of specific vessels after the injection of an Iodine contrast. The exam itself is performed by a Radiologic Technologist RT (R).