CT scan(CT scan. A series of detailed pictures of areas inside the body taken from different angles; the pictures are created by a computer linked to an x-ray machine. Also called computerized tomography and computerized axial tomography (CAT) scan. Synonym(s): CAT scan, x-ray; computed axial tomography; computer assisted tomography; computer-assisted transaxial tomography; computerized transaxial tomography; computerized transverse axial tomography; CT scan; CTT scan; EMI scan; tomodensitometry; X-ray computed tomography nih.gov'More)