PET

PET - radioactive trace elements that sends out gamma foton pairs.

PET is a method where you use a radioactive isotop to make pictures. PET gives very accurate pictures right down to a cellular level. For eksempel scientists can bind radioactive fluorine atoms (F- 18) to glukose molecules, witch then gets injected into a pasient.

The PET- machine was made so it can register a foton pair with a gamma camera and in that way, make a picture that shows accurately where waves comes from. The method is similar to scintigraphy, but gives much more details.

Positron emission tomography–computed tomography (better known as PET-CT or PET/CT) is a nuclear medicine technique which combines, in a single gantry, a positron emission tomography (PET) scanner and an x-ray computed tomography (CT) scanner, to acquire sequential images from both devices in the same session, which are combined into a single superposed (co-registered) image. Thus, functional imaging obtained by PET, which depicts the spatial distribution of metabolic or biochemical activity in the body can be more precisely aligned or correlated with anatomic imaging obtained by CT scanning. Two- and three-dimensional image reconstruction may be rendered as a function of a common software and control system.