Dynamic statistical parametric mapping for analyzing the magnetoencephalographic epileptiform activity in patients with epilepsy.

Abstract:

:Our current purpose is to evaluate the applicability of dynamic statistical parametric mapping, a novel method for localizing epileptiform activity recorded with magnetoencephalography in patients with epilepsy. We report four pediatric patients with focal epilepsies. Magnetoencephalographic data were collected with a 306-channel whole-head helmet-shaped sensor array. We calculated equivalent current dipoles and dynamic statistical parametric mapping movies of the interictal epileptiform discharges that were based in the minimum-L2 norm estimate, minimizing the square sum of the dipole element amplitudes. The dynamic statistical parametric mapping analysis of interictal epileptiform discharges can demonstrate the rapid change and propagation of interical epileptiform discharges. According to these findings, specific epileptogenic lesion-focal cortical dysplasia could be found and patients could be operated on successfully. The presurgical analysis of interictal epileptiform discharges using dynamic statistical parametric mapping seems to be promising in patients with a possible underlying focal cortical dysplasia and might help to guide the placement of invasive electrodes.

journal_name

J Child Neurol

authors

Shiraishi H,Stufflebeam SM,Knake S,Ahlfors SP,Sudo A,Asahina N,Egawa K,Hatanaka K,Kohsaka S,Saitoh S,Grant PE,Dale AM,Halgren E

doi

10.1177/08830738050200041601

subject

Has Abstract

pub_date

2005-04-01 00:00:00

pages

363-9

issue

4

eissn

0883-0738

issn

1708-8283

journal_volume

20

pub_type

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