Neuro-oncologia

USEFUL TESTS Neuro oncologia

Computed tomography (CT)

Is a medical imaging technique employing tomography. Digital geometry processing is used to generate a three-dimensional image of the inside of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. The word "tomography" is derived from the Greek tomos (slice) and graphein (to write).used to visualize the internal structure and function of the body.

A Philips 64 slice 'Brilliance' Scanner Source: ,Glitzy queen00

Computed tomography of human brain, from base of the skull to top. Taken with intravenous contrast medium. Source: Radiology, Uppsala University Hospital

Some slices of a cranial CT scan are shown. The bones are whiter than the surrounding area. (Whiter means higher attenuation.) Note the blood vessels (arrowed) showing brightly due to the injection of an iodine-based contrast agent.