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Related Experiment Video

Updated: Jul 27, 2025

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[

Bram van Leer1,2, Johannes H van Snick1, Mark Londema1,2

  • 1Medical Imaging Center, Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.

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Summary
This summary is machine-generated.

[18F]FDG-PET/CT imaging helped identify causes of persistent inflammation in critically ill COVID-19 patients. This safe imaging technique aids in diagnosing secondary infections and inflammatory conditions in mechanically ventilated patients.

Keywords:
ARDSCOVID-19Critically ill patientsICUPersistent inflammation[18F]FDG-PET/CT

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Area of Science:

  • Medical Imaging
  • Nuclear Medicine
  • Infectious Diseases

Background:

  • Persistent inflammation is a challenge in critically ill COVID-19 patients.
  • Routine laboratory tests have limitations in differentiating inflammation from secondary infections.
  • Positron Emission Tomography/Computed Tomography (PET/CT) offers advanced imaging capabilities.

Purpose of the Study:

  • To evaluate the diagnostic value of [18F]FDG-PET/CT in critically ill COVID-19 patients with persistent inflammation.
  • To identify potential secondary infections or inflammatory foci.
  • To assess the safety of [18F]FDG-PET/CT in mechanically ventilated patients.

Main Methods:

  • Retrospective analysis of four mechanically ventilated COVID-19 patients.
  • Utilized [18F]FDG-PET/CT imaging to assess inflammation.
  • Correlated imaging findings with clinical data and laboratory results.

Main Results:

  • Pulmonary PET/CT findings varied but indicated bilateral lung anomalies explaining elevated inflammatory markers.
  • Secondary infection/inflammatory focus suspected in two patients (pancreatitis, gastritis).
  • Lymphadenopathy noted in patients with detectable SARS-CoV-2 viral load; muscle uptake observed in all patients, potentially related to heterotopic ossification.

Conclusions:

  • [18F]FDG-PET/CT is a valuable tool for diagnosing causes of persistent inflammation in critically ill COVID-19 patients.
  • The imaging technique can safely identify secondary infections and inflammatory conditions.
  • PET/CT enhances diagnostic capabilities beyond routine laboratory assessments.