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Related Experiment Videos

Hepatic abscesses: MR imaging findings

R J Méndez1, M L Schiebler, E K Outwater

  • 1Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia.

Radiology
|February 1, 1994
PubMed
Summary
This summary is machine-generated.

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Magnetic resonance (MR) imaging helps characterize hepatic abscesses. Key findings include high T2-weighted signal intensity and rim enhancement after gadopentetate dimeglumine injection.

Area of Science:

  • Radiology
  • Medical Imaging

Background:

  • Hepatic abscesses are collections of pus within the liver.
  • Accurate characterization is crucial for effective treatment.

Purpose of the Study:

  • To identify magnetic resonance (MR) imaging features that characterize hepatic abscesses.
  • To correlate imaging findings with abscess etiology.

Main Methods:

  • Retrospective review of MR imaging studies and clinical records of 18 patients with proven hepatic abscesses.
  • Analysis of lesion morphology, signal intensity on T1- and T2-weighted images, and enhancement patterns after gadolinium-based contrast administration.
  • Categorization of abscesses by etiology: pyogenic, fungal, and amebic.

Main Results:

Related Experiment Videos

  • 122 lesions were analyzed. Most were round with sharp borders.
  • Abscesses typically appeared hypointense on T1-weighted and hyperintense on T2-weighted images.
  • Post-contrast imaging revealed sharp margins and rim enhancement in most lesions. Perilesional edema was a common finding.

    • Conclusions:

    • MR imaging findings, including high T2 signal intensity and perilesional edema, are characteristic of hepatic abscesses.
    • Gadopentetate dimeglumine administration enhances lesion conspicuity and demonstrates rim enhancement, aiding diagnosis.
    • MR imaging is a valuable tool for diagnosing and characterizing hepatic abscesses.