Baylor College of Medicine, Neurology, Houston, Texas, United States.
Arq Neuropsiquiatr. 2022 May;80(5):523-529. doi: 10.1590/0004-282X-ANP-2021-0083.
Magnetoencephalography (MEG) is a neurophysiological technique that measures the magnetic fields associated with neuronal activity in the brain. It is closely related but distinct from its counterpart electroencephalography (EEG). The first MEG was recorded more than 50 years ago and has technologically evolved over this time. It is now well established in clinical practice particularly in the field of epilepsy surgery and functional brain mapping. However, underutilization and misunderstanding of the clinical applications of MEG is a challenge to more widespread use of this technology. A fundamental understanding of the neurophysiology and physics of MEG is discussed in this article as well as practical issues related to implementation, analysis, and clinical applications. The future of MEG and some potential clinical applications are briefly reviewed.
脑磁图描记术（MEG）是一种神经生理学技术，用于测量与大脑神经元活动相关的磁场。它与脑电图（EEG）密切相关但又有所不同。第一个 MEG 是在 50 多年前记录的，在此期间，它在技术上不断发展。它现在在临床实践中已经得到很好的确立，特别是在癫痫手术和功能脑映射领域。然而，MEG 的临床应用的利用不足和误解是这项技术更广泛应用的挑战。本文讨论了 MEG 的神经生理学和物理学基础，以及与实施、分析和临床应用相关的实际问题。简要回顾了 MEG 的未来和一些潜在的临床应用。
