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Related Experiment Video

Updated: Jun 25, 2026

Reliable Acquisition of Electroencephalography Data during Simultaneous Electroencephalography and Functional MRI
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Published on: March 19, 2021

Transient seizure-related MRI abnormalities.

Benjamin Ong1, Patrick Bergin, Theresa Heffernan

  • 1Department of Diagnostic Radiology, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia. drbenong@gmail.com

Journal of Neuroimaging : Official Journal of the American Society of Neuroimaging
|February 20, 2009
PubMed
Summary

Transient magnetic resonance imaging (MRI) findings, beyond posterior reversible encephalopathy syndrome, are associated with seizure activity. This review highlights diverse, temporary brain abnormalities linked to seizures.

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Area of Science:

  • Neurology
  • Radiology
  • Neuroimaging

Background:

  • Reversible edema is a known transient finding after seizures.
  • The literature describes additional distinct, transient MRI findings associated with seizure activity.

Purpose of the Study:

  • To review transient, conventional magnetic resonance imaging (MRI) manifestations of seizure activity.
  • To present and highlight less common MRI abnormalities associated with seizures.

Main Methods:

  • Pictorial essay format review of existing literature.
  • Focus on transient conventional MRI findings.

Main Results:

  • Posterior reversible encephalopathy syndrome (PRES) appearances are included.
  • Less common transient abnormalities in the cerebral and cerebellar cortices, deep gray matter, meninges, hippocampi, and corpus callosum are presented.

Conclusions:

  • Seizure activity can manifest with a variety of transient MRI findings beyond PRES.
  • Recognition of these diverse transient MRI abnormalities is crucial for accurate diagnosis in patients with seizures.