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Magnetoencephalography (MEG) is increasingly used in the non-invasive presurgical evaluation of patients with refractory focal epilepsy. Combination of MEG and magnetic resonance imaging of the brain can estimate the location of the epileptiform discharges. We report a case of a patient with paroxysmal sensory symptoms. All previous investigations where normal, but by the use of MEG we were able to identify the epileptic focus in the insular region. MEG has a better spatial resolution than electroencefalography, and it is more sensitive to tangentially oriented dipoles. MEG should be considered in the workup of patients with refractory focal epilepsy.


Lene Duez, Sándor Beniczky, Anders Fuglsang-Frederiksen. Identification of the epileptic focus by the use of magnetoencephalography in a patient with refractory focal epilepsy]. Ugeskrift for laeger. 2013 Apr 22;175(17):1197-8

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PMID: 23651787

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