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Spike and slow wave localization by magnetoencephalography

J D Lewine¹, W W Orrison

¹Magnetic Source Imaging Facility, New Mexico Institute for Neuroimaging, Albuquerque, USA.

Neuroimaging Clinics of North America

|November 1, 1995

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Magnetoencephalography (MEG) is a standard diagnostic tool for epilepsy, effectively localizing irritative zones and seizure onset sites. Future cost-effective systems will expand its use to other neurological conditions.

Area of Science:

Neuroscience
Medical Imaging
Epileptology

Background:

Magnetoencephalography (MEG) is increasingly utilized in epilepsy diagnosis.
Large-array systems make spike and ALFMA examinations clinically viable.

Purpose of the Study:

To evaluate the effectiveness of interictal MEG in localizing epileptic zones.
To discuss the clinical viability and future potential of MEG technology.

Main Methods:

Utilizing interictal MEG data.
Employing spike and ALFMA examinations with large-array systems.

Main Results:

MEG effectively localizes the epileptic irritative zone.
MEG can identify the seizure onset site in some epilepsy cases.

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Conclusions:

MEG is a valuable diagnostic tool for epilepsy.
Technological advancements are expected to reduce costs and expand MEG applications to conditions beyond epilepsy, including head trauma, ischemic disease, dementia, and psychiatric disorders.