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PET: a biological imaging technique.

M E Phelps1

  • 1Department of Radiological Sciences, Crump Institute, UCLA School of Medicine 90024.

Neurochemical Research
|September 1, 1991
PubMed
Summary
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Positron Emission Tomography (PET) images biological processes in the brain and body, tracking functional interactions. Advances in PET technology and labeled compounds enable diverse biological assays for neuropsychiatric disorders and drug abuse research.

Area of Science:

  • Neuroscience
  • Medical Imaging
  • Pharmacology

Background:

  • Positron Emission Tomography (PET) and in vivo autoradiography image biological processes in the brain and body.
  • Both techniques track functional interactions between the brain and other bodily systems.
  • Technological advancements are improving PET's spatial resolution and automated synthesis of radiolabeled compounds.

Purpose of the Study:

  • To highlight the capabilities of PET in imaging biological processes and functional interactions.
  • To showcase the expanding applications of PET due to increased labeled compounds and assays.
  • To review the use of PET in studying normal brain function, development, plasticity, and neuropsychiatric disorders.

Main Methods:

  • Utilizing PET to image and measure biological process rates throughout the brain and body.

Related Experiment Videos

  • Employing a wide array of over 500 labeled compounds for diverse biological assays.
  • Mapping evoked responses and biological alterations in various functional and disease states.

    • Main Results:

    • PET enables high-resolution imaging of distributed biological systems and their interactions.
    • Over 500 labeled compounds facilitate assays for metabolism, synaptic processes, enzyme activity, and drug interactions.
    • PET studies map normal brain functions, development, plasticity, and therapeutic responses in neuropsychiatric disorders.

    Conclusions:

    • PET is a powerful tool for in vivo imaging of complex biological processes and functional connectivity.
    • The expanding PET toolkit supports comprehensive investigation of brain function and disease.
    • PET imaging plays a crucial role in understanding neuropsychiatric disorders, drug abuse, and treatment efficacy.