Positron emission tomography in spinal infections

Alexandros Georgakopoulos1, Spiros G Pneumaticos2, Nikolaos V Sipsas3

  • 1Nuclear Medicine Division, PET/CT section, Foundation for Biomedical Research of the Academy of Athens, Athens, Greece.

Clinical Imaging
|April 28, 2015
PubMed

Insights

Magnetic resonance imaging is best for diagnosing spinal infections in unoperated patients. Positron emission tomography/computed tomography aids in differentiating spinal infections from Modic changes and identifying infection activity, especially in patients with implants.

Area of Science:

  • Radiology
  • Nuclear Medicine
  • Orthopedics

Background:

  • Spinal infections pose diagnostic challenges, particularly in patients with metallic implants or prosthetic replacements.
  • Distinguishing between spinal infection and other conditions like Modic changes can be difficult with conventional imaging.
  • Accurate assessment of infection activity and treatment response is crucial for effective patient management.

Purpose of the Study:

  • To evaluate the role of magnetic resonance imaging (MRI) in diagnosing spinal infections.
  • To assess the utility of 2-[(18)F]-fluoro-2deoxy-d-glucose positron emission tomography/computed tomography (FDG-PET/CT) in specific diagnostic scenarios.
  • To highlight the clinical impact and superiority of advanced imaging techniques in managing infectious spondylitis.

Main Methods:

  • Review of magnetic resonance imaging (MRI) for diagnosing spinal infection in unoperated cases.
  • Evaluation of 2-[(18)F]-fluoro-2deoxy-d-glucose positron emission tomography/computed tomography (FDG-PET/CT) for differentiating spinal infection from Modic changes in patients with implants.
  • Assessment of FDG-PET/CT for differentiating tuberculous from pyogenic spondylitis and for monitoring treatment response.

Main Results:

  • MRI is the preferred imaging modality for diagnosing spinal infections in non-operative cases.
  • FDG-PET/CT is recommended for distinguishing spinal infection from Modic changes in patients with metallic implants and for differentiating tuberculous from pyogenic spondylitis.
  • FDG-PET/CT demonstrates significant clinical impact, superior ability to reveal residual disease, and early response to therapy compared to other techniques.

Conclusions:

  • Advanced imaging techniques, particularly FDG-PET/CT, offer significant advantages in diagnosing and managing spinal infections.
  • FDG-PET/CT plays a vital role in complex cases involving implants and differentiating infectious etiologies.
  • Ongoing research into new tracers and hybrid modalities promises further advancements in imaging spinal infections.

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