脑磁图机研究进展及临床应用

The Study Progress and Clinical Application of Magnetoencephalograph

脑磁图机(MEG)是一种无创性测定脑电活动的设备,测定的是神经元兴奋时产生的电流所伴随的磁场变化。目前MEG的传感器允许同时记录306个脑磁图磁道。现在主要应用于(1)确定癫痫病人的脑内病灶;(2)精确的脑功能定位以及诊断某些神经精神疾病等。本文主要综述了近十余年来脑磁图的研究进展及临床应用。

Magnetoence-phalograph(MEG) is a non-invasive device to detect the intracerebral electrical activity. It can detect the variation of the magnetic field caused by the current during the neuronal excitation. Now, sensor of the MEG allowed a simultane-ous recording with 306 MEG channels. The MEG is mainly applied to (1)determination of epileptogenic cortex; (2) accurate location of the brain functional area and diagnosis of some neuropsychiatric disorders et aI. The article summed up the lastly ten years study progress and clinical application of magnetoencephalo-graph.