Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Encyclopedia, Wikipedia. contractor. n. 1) a person or entity that enters into a contract. 2) commonly, a person or entity that agrees to construct a building or to provide or install specialized portions of the construction.
Test Overview. Coronary calcium scans use a special X-ray test called computed tomography (CT) to check for the buildup of calcium in plaque on the walls of the arteries of the heart (coronary arteries). This test is used to check for heart disease in an early stage and to determine how severe it is. Coronary calcium scans are also called cardiac calcium scoring. The coronary arteries supply blood to the heart. Normally, the coronary arteries do not contain calcium. Calcium in the coronary arteries is a sign of coronary artery disease (CAD) . A CT scan takes pictures of the heart in thin sections. The pictures are recorded in a computer and can be saved for more study or printed out as photographs.
1 This type of CT scan is called a coronary calcium scan. 2  Calcium in the coronary arteries may be an early sign of CHD. 3  Problems with the aorta. 4  The aorta is the main artery that carries oxygen-rich blood from the heart to the body. 5  Cardiac CT can detect two serious problems in the aorta: 6  Aneurysm (AN-u-rism).uring a cardiac CT scan, an x-ray machine will move around your body in a circle. The machine will take a picture of each part of your heart. A computer will put the pictures together to make a three-dimensional (3D) picture of the whole heart.