| a tomographic imaging device that yields visual information about the ongoing activity of the brain: positron-emitting isotopes, incorporated into biologically important compounds, are injected intravenously or administered by inhalation, and the resultant gamma radiation is sensed by detectors and converted into computer-generated images of blood flow, oxygen utilization, glucose uptake, etc. |
| PET scanner n. A device that produces cross-sectional x-rays of metabolic processes by means of positron emission tomography. [p(ositron) e(mission) t(omography).] |
PET scanner n.
A device that produces cross-sectional x-rays of metabolic processes by means of positron emission tomography.