Magnetoencephalography (MEG) is a completely noninvasive technique for detecting brain function, which can be widely used in the development and research of brain function and the diagnosis of clinical brain diseases. The detection process of magnetoencephalography is to directly measure the extremely weak biological magnetic field signal emitted by nerve current in the brain. At the same time, the measuring system itself will not release any harmful rays, energy or machine noise. In the detection process, the magnetoencephalography detector does not need to be fixed on the patient's head, and no special preparation is needed for the patient before measurement, so the preparation time is short, the detection process is safe and simple, and there is no side effect on the human body.
At present, the whole brain magnetic field signal can be collected only by one measurement in the process of magnetoencephalography detection, and it has an anti-external magnetic field interference system, which can simultaneously collect transient data of the whole brain at high speed. Through computer comprehensive image information processing, the obtained signal is converted into magnetoencephalogram and isoelectric map, and the corresponding mathematical model is fitted to obtain the signal source position. Furthermore, the neural signal source determined by magnetoencephalography can be superimposed and fused with anatomical image information such as MRI and CT to form the anatomical location of brain function, which can accurately reflect the instantaneous change state of brain function. At present, magnetoencephalography has been used in the study of advanced brain functions such as thinking and emotion, as well as the preoperative brain function localization, epilepsy focus surgery, surgical treatment of functional diseases such as Parkinson's disease, psychosis and drug addiction, as well as clinical scientific applications such as cerebrovascular diseases and fetal nervous system diseases in children.
In the field of neurosurgery, the concept of minimally invasive surgery with minimal injury and maximum preservation of neurological function is a hot spot in clinical research and practice of neurosurgery at home and abroad, and it is also the development direction of neurosurgery in 2 1 century. Magnetoencephalography can determine the topographic map of somatosensory centers in various parts of the body and accurately identify the positions of central components before and after somatosensory response; It can also locate several areas in the cerebral cortex related to sensory information processing; It can be used to identify the language processing areas in the cerebral cortex, so as to accurately locate the functional anatomy of the brain before operation, which is of great value to improve the level of minimally invasive neurosurgery.
In addition to clinical medicine, MEG is also widely used in basic research in neuroscience, psychiatry, psychology and other fields, such as subcortical neuron activity, synchronous neuron analysis, language learning research, learning and memory research and traditional medical research. At present, it is also useful for physical examination of special people (such as astronauts and pilots).
The above is the introduction of the most advanced magnetoencephalography monitoring introduced by Shanghai Blue Cross Brain Hospital for the first time. At present, there are few hospitals whose technical equipment can reach this world-class level. Shanghai Blue Cross Brain Hospital is a pilot hospital for brain diseases.