We do a CT Scan that gives cross-sectional images of internal organs and other internal structures.
It uses x-rays to perform this work. X-ray flows through the x-ray tube, that is placed inside the gantry. The part of your body to be scanned has to be placed inside the hole in this gantry. These x-ray images are one dimensional, But CT scan allows us to see the inner parts of the brain apart from just the skull.