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MRI and FDG PET/CT findings in 3 cases of spinal infectious arachnoiditis

Aisheng Dong1, Changjing Zuo, Ping Zhang

  • 1From the Departments of *Nuclear Medicine, †Neurology, ‡Radiology, and §Orthopedic Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China.

Clinical Nuclear Medicine
|December 11, 2013
PubMed

Insights

Spinal arachnoiditis, an inflammation of the spinal cord

Area of Science:

  • Neurology
  • Radiology
  • Infectious Diseases

Background:

  • Spinal arachnoiditis involves inflammation and scarring of the spinal cord's arachnoid membrane.
  • Diagnosis often relies on MRI, but FDG PET/CT findings are infrequently documented.

Observation:

  • Three cases of infectious spinal arachnoiditis (1 pyogenic, 2 tuberculous) were analyzed.
  • MRI revealed thickened spinal meninges with significant enhancement.
  • FDG PET/CT in two cases showed intense linear uptake along the spinal canal.

Findings:

  • FDG PET/CT demonstrates characteristic intense linear uptake in infectious spinal arachnoiditis.
  • Combined MRI and FDG PET/CT imaging can pinpoint infection sites.
  • This imaging combination aids in assessing infection activity.

Implications:

  • FDG PET/CT offers valuable insights into spinal arachnoiditis, complementing MRI.
  • Accurate identification and assessment of infection activity are crucial for effective treatment.
  • Further research into FDG PET/CT utility in spinal infections is warranted.

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