Briefly explain how PET employs radioactivity to measure dopamine receptor levels in the striatum.
This solution includes a discussion on how positron emission tomography works to help scientists take a picture of the brain. The general mechanisms of the procedure are explained as well as several methods by which different molecules in the brain can be analyzed and quantified. Although this solution is tailored towards the visualization of dopamine receptors in the striatum, the process can be applied to any molecule in any area of the brain.