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Related Concept Videos

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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MRI postprocessing in presurgical evaluation.

Irene Wang1, Andreas Alexopoulos

  • 1Epilepsy Center, Cleveland Clinic Foundation, Cleveland, Ohio, USA.

Current Opinion in Neurology
|February 23, 2016
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Summary
This summary is machine-generated.

Advanced MRI postprocessing techniques enhance the detection of subtle brain abnormalities in epilepsy patients with initially unremarkable scans. These methods improve presurgical evaluation by more accurately identifying and mapping epileptogenic lesions.

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Area of Science:

  • Neuroimaging
  • Epileptology
  • Radiology

Background:

  • Structural Magnetic Resonance Imaging (MRI) is crucial for identifying epileptogenic lesions.
  • Visual MRI analysis can miss subtle abnormalities, particularly in 'nonlesional' epilepsy cases.
  • Advanced MRI postprocessing offers complementary information to visual inspection.

Purpose of the Study:

  • To review recent advancements in MRI postprocessing techniques for epilepsy presurgical evaluation.
  • To focus on the application of these techniques in patients with visually nonlesional MRI.
  • To highlight the clinical value of advanced MRI analysis in identifying subtle epileptogenic zones.

Main Methods:

  • Review of current literature on MRI postprocessing methods in epilepsy.
  • Analysis of techniques for lesion detection, confirmation, and delineation of cortical abnormalities.
  • Discussion of future directions, including higher field strengths and multi-contrast approaches.

Main Results:

  • MRI postprocessing aids in individual lesion detection and confirmation, reducing over-reading.
  • It effectively detects subtle sulcal/gyral morphologic changes missed by visual analysis.
  • These techniques can delineate cortical abnormalities extending beyond visible lesions.

Conclusions:

  • MRI postprocessing is valuable for increasing the diagnostic yield of structural MRI in epilepsy.
  • It should be integrated into the presurgical evaluation of nonlesional epilepsies.
  • Enhanced identification and mapping of cortical abnormalities improve surgical targeting and outcomes.