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.
1. (Also known as CT colonoscopy, virtual colonography or virtual colonoscopy). A computed tomography colonography (CTC), is a CT scan to look at the colon, or large bowel. A CT scan is a specialised X-ray test during which the patient lies on a moving table/bed as it passes through a circular X-ray machine.nother reason to have a CTC is if you have had a difficult or an incomplete conventional colonoscopy, when the whole bowel may not have been completely or confidently assessed. You must inform your doctor if you are pregnant. You should not have a CTC if you are pregnant.