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Related Concept Videos

Positron Emission Tomography01:29

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Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body...
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Visualization and Quantification of Brown and Beige Adipose Tissues in Mice using [18F]FDG Micro-PET/MR Imaging
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Red Bull PET/CT.

Sebastian E Serfling1, Andreas Buck1, Steven P Rowe2

  • 1Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany.

Nuklearmedizin. Nuclear Medicine
|December 22, 2023
PubMed
Summary
This summary is machine-generated.

Energy drink consumption after [18F]FDG injection can cause non-diagnostic PET/CT scans due to increased muscle uptake. Patients must avoid these drinks before and after radiotracer administration for accurate Hodgkin Lymphoma follow-up.

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Area of Science:

  • Nuclear Medicine
  • Radiopharmacology
  • Oncology

Background:

  • Fluorodeoxyglucose (FDG) Positron Emission Tomography/Computed Tomography (PET/CT) is vital for Hodgkin Lymphoma (HL) staging and treatment response assessment.
  • Routine follow-up protocols often involve serial FDG PET/CT scans after chemotherapy and radiation therapy.

Observation:

  • A patient undergoing HL follow-up consumed an energy drink shortly after [18F]FDG administration.
  • This resulted in significant radiotracer uptake in large skeletal muscles, rendering the initial PET/CT scan non-diagnostic.
  • A repeat scan after adherence to fasting guidelines yielded diagnostic-quality images.

Findings:

  • Key ingredients in energy drinks (sugar, caffeine, taurine, glucuronolactone) may contribute to increased [18F]FDG uptake in skeletal muscles.
  • This effect can compromise the diagnostic accuracy of FDG PET/CT scans, potentially impacting treatment response evaluation.
  • The findings may extend to sugar-free energy drink formulations.

Implications:

  • Patients must be thoroughly informed to avoid energy drink consumption both before and after [18F]FDG injection.
  • Strict adherence to pre-scan dietary recommendations is crucial for ensuring the diagnostic utility of FDG PET/CT in oncology.
  • This case highlights the need for comprehensive patient education regarding factors affecting radiotracer biodistribution and imaging quality.