पॉज़िट्रॉन (en. Positron)

Radiography, Computed tomography, Positron emission tomography and Medical ultrasonography are important diagnostic tools developed in the West.

Researchers used a positron emission tomography (PET) scanner to compare the production of dopamine, a neurotransmitter involved with reward and motivation, in people who smoked weed at least three times a week along with people who had puffed no more than 10 times in their life.

Later, the substance was used in dedicated positron tomographic scanners, to yield the modern procedure.

Scientists from the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have set out to help build the world’s first total-body positron emission tomography (PET) scanner, a medical imaging device that could change the way cancers and other diseases are diagnosed and treated.

In this study, patients with RBD and no clinical evidence of Parkinson's and cognitive impairment were recruited from tertiary sleep centres in Spain and Denmark and their brain changes were analysed using Positron emission tomography (PET).

Imaging techniques, such as positron emission tomography (PET) and functional magnetic resonance imaging (fMRI), allow doctors and scientists to map brain activity in real time.

To identify possible physical and physiological changes that could be associated with the reported effects, researchers assessed the results of memory and other cognitive tests, positron emission tests (PET) measuring brain metabolism, and magnetic resonance imaging (MRI) scans for brain structure.