Magnetoencephalographic features in neurocysticercosis.

BACKGROUND

Magnetoencephalography (MEG) is a method of determining the brain activity noninvasively be detecting the magnetic fields associated with neuronal electrical activities.

METHODS

By using 37-channel DC-superconducting quantum interference devices, MEG activity was recorded in a patient with neurocysticerosis, who had a long-term history of epilepsy.

RESULTS

MEG clearly demonstrated accumulation of current dipoles originating from high-frequency waves around the cysticercal cyst, while scalp electroencephalogram failed to reveal paroxysmal discharge. Intraoperative electrocorticography revealed multiple spike activities around the lesion, consistent with MEG findings.

CONCLUSIONS

We discussed the application of MEG to the patients with neurocysticercosis in estimating epileptogenic sources.