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Free Content Update on Adult Epilepsy: What Neuroradiologists Should Know

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Neuroimaging is an important component of diagnosis and presurgical planning for localization-related epilepsy. The evaluation and treatment of medication-refractory epilepsy are changing as clinicians move toward less invasive and more selective and adaptive approaches. This article reviews concepts and terms, including the International League Against Epilepsy 2017 revised classification of seizures; presents common lesions and approaches to finding them; and provides updates in advanced structural and functional imaging. Finally, we summarize current less invasive therapies for focal epilepsy.

Learning Objectives:

1) To summarize epilepsy terms, concepts, and statistics


2) To identify common epileptogenic lesions and structural imaging pitfalls


3) To become familiar with imaging protocols and techniques including complementary functional imaging


4) To understand new trends and devices in surgical evaluation and therapy
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Keywords: AED = antiepileptic drug; DNET = dysembryoplastic neuroepithelial tumor; EEG = electroencephalography; FCD = focal cortical dysplasia; GluCEST = glutamate chemical exchange saturation transfer; HS = hippocampal sclerosis; ILAE = International League Against Epilepsy; LITT = laser interstitial thermal therapy; MEG = magnetoencephalography; MTS = mesial temporal sclerosis; PVNH = periventricular nodular heterotopia; PXA = pleomorphic xanthoastrocytoma; RNS = responsive neurostimulation; SBH = subcortical band heterotopia; TLE = temporal lobe epilepsy; VNS = vagus nerve stimulation; iEEG = intracranial EEG; sEEG = stereotactic EEG

Document Type: Research Article

Publication date: June 1, 2020

More about this publication?
  • Neurographics is the peer-reviewed, bimonthly educational journal of the American Society of Neuroradiology. The journal comprises articles selected from material presented at the ASNR Annual Meeting. Neurographics also publishes other high-quality submissions that are primarily educational and have a high emphasis on a pictorial approach. Neurographics offers CME credit for reading review articles and completing quiz-based self-assessment activities.

    Visit the ASNR Education Connection to view all available CME courses.

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