The surgical removal of plaque buildup from the interior of an artery. Atheroma: A deposit of plaque on or within the arterial wall. Atherosclerosis: Hardening and narrowing of the arteries caused by a buildup of cholesterol plaque on the interior walls of the arteries. atrial fibrillation
computed tomography (CT) (computerized axial tomography (CAT)) a radiologic imaging modality that uses computer processing to generate an image (CAT scan) of the tissue density in a âsliceâ as thin as 1 to 10 mm in thickness through the patient's body.
Definition of CT scan. CT scan: Computed tomography scan. Detailed images of internal organs are obtained by this type of sophisticated X-ray device. CT stands for computed tomography. The CT scan can reveal anatomic details of internal organs that cannot be seen in conventional X-rays.