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Related Experiment Videos

Subdural and epidural empyemas: MR imaging.

K Weingarten1, R D Zimmerman, R D Becker

  • 1Department of Radiology, New York Hospital-Cornell Medical Center, NY 10021.

AJR. American Journal of Roentgenology
|March 1, 1989
PubMed
Summary

Magnetic resonance imaging (MRI) is superior to CT scans for diagnosing extraaxial empyemas. MRI effectively visualizes these infections and associated brain abnormalities, improving patient prognosis.

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Area of Science:

  • Neuroradiology
  • Medical Imaging
  • Infectious Disease

Background:

  • Extraaxial empyemas are serious intracranial infections requiring prompt diagnosis.
  • Computed tomography (CT) has limitations in fully characterizing these lesions.
  • Magnetic resonance imaging (MRI) offers advanced visualization capabilities.

Observation:

  • Six patients with extraaxial empyemas underwent both MRI and CT imaging.
  • MRI sequences revealed characteristic signal intensities for empyemas.
  • A hypointense rim was noted in epidural empyemas, differentiating them from subdural types.

Findings:

  • MRI demonstrated superior visualization of empyema collections compared to CT.
  • Characteristic MRI signal changes helped distinguish empyemas from sterile effusions and hematomas.

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  • MRI effectively depicted inflammation-induced parenchymal changes like edema and mass effect.

    • Implications:

    • Early and accurate diagnosis of intracranial infections is crucial for improved patient outcomes.
    • MRI is the preferred imaging modality for suspected acute intracranial infections.
    • Advanced MRI visualization aids in precise diagnosis and management of extraaxial empyemas.