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Molecular Imaging

Molecular imaging enables the visualization of the cellular function by providing detailed pictures of what is happening inside the body at the molecular and cellular level. Unlike other diagnostic imaging procedures that offer anatomical pictures, molecular imaging allows physicians to see how the body is functioning and to measure its chemical and biological processes.

Positron emission tomography (PET) is a specific type of molecular imaging technique that provides physicians with information about the performance of tissues and organs. PET is often used in combination with computerized tomography (CT) imaging. It uses a scanner and a small amount of radiopharmaceutical that is injected into a patient's vein to assist in making detailed, computerized pictures of areas inside the body.

PET is often used to evaluate:

  • Bone disorders
  • Cancer
  • Effectiveness of treatments
  • Gastrointestinal disorders
  • Heart conditions
  • Kidney and thyroid disorders
  • Lung disorders
  • Neurological diseases such as Alzheimer's and multiple sclerosis

The PET Group has four subcommittees: Coverage, Coding and Payment, Advocacy and Education, Value and Evidence and Regulatory.

Molecular imaging drives effective patient care through screening, diagnosis, and treatment. Members develop Standards and provide technical advice for PET and SPECT (single-photon emission computerized tomography) scanners. Through the PET Group, Members engage legislative and regulatory decision-makers and build relationships with clinicians and patient organizations.


  • Reviews and coordinates all work of the Association in the development of technical Standards and specifications concerning molecular imaging, both within the Association and in cooperation with other organizations
  • Promotes the value of molecular imaging among all stakeholders
  • Meets with regulatory and legislative decision makers in Washington, D.C., and in the states to effect positive change for the molecular imaging industry
  • Engages the medical and patient communities to advance consensus positions for the molecular imaging community


  • Hospitals
  • Independent Physician Offices
  • Outpatient Centers
  • University/Academic Research and Medical Centers​


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