I. CAT scan /ˈkæt ˌskæn/ BrE AmE ( also CT scan ) noun [countable]
a medical examination in which an image of the inside of someone’s body is produced on a computer using X-RAYS
—CAT scanner noun [countable]
II. CT scan /ˌsiː ˈtiː skæn, ˈkæt skæn/ BrE AmE noun [countable]
another name for a ↑ CAT scan