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Ictal imaging using functional magnetic resonance

A Connelly1

  • 1Radiology and Physics Unit, Institute of Child Health, London, UK.

Magnetic Resonance Imaging
|January 1, 1995
PubMed
Summary
This summary is machine-generated.

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Functional MRI maps brain activity during seizures, revealing abnormal gyri activation in a child. This technique may offer insights into epilepsy even between clinical seizure events.

Area of Science:

  • Neuroimaging
  • Epilepsy Research
  • Functional Magnetic Resonance Imaging

Background:

  • Conventional 1.5 T clinical MRI system used for investigation.
  • Focus on a 4-year-old boy with frequent partial motor seizures.
  • FLASH images acquired every 10 s over 25 min.

Observation:

  • Cortical activation mapped during focal seizures.
  • Activation images derived by subtracting baseline from seizure images.
  • Sequential activation observed in specific left hemisphere gyri during seizures.

Findings:

  • Functional MRI revealed sequential activation patterns.
  • Activated regions included structurally abnormal gyri.
  • Activation detected even during periods without detectable clinical seizures.

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Implications:

  • Functional MRI offers new insights into epileptic brain dynamics and structure.
  • Potential for obtaining functional data in the absence of clinical seizures.
  • Suggests utility for studying patients with interictal electrical disturbances.