The Chinese Academy of Sciences has developed China's first new multi-channel magnetoencephalography prototype
Author: Ding Jia Release Date: 2018-09-25
The reporter recently learned from the Chinese Academy of Sciences that the Institute of Biophysics of the Chinese Academy of Sciences has successfully developed the first prototype of a new multi-channel magnetoencephalography system based on atomic magnetometers, and successfully obtained high-quality brain magnetic signals.
The magnetoencephalography system based on atomic magnetometer is a new technology in recent years. It can work at room temperature, the probe can be close to the scalp, and has the advantages of low construction, running cost, high sensitivity and high adaptability. It can be made into wearable. The system is expected to increase the penetration of magnetoencephalography and expand into more research and clinical fields. The institute successfully built a 12-channel prototype of the atomic magnetometer magnetoencephalography, which includes 96 channels of 3D printing personalized customization, compatible with a variety of detectors and adjustable magnetoencephalography helmets and other innovative technologies, and has been successful Obtain high quality brain magnetic imaging signals.
Compared with the traditional superconducting quantum interferometer magnetoencephalography system, the signal-to-noise ratio of the prototype is more than doubled. In some applications, by adjusting the detector arrangement, the brain can be used compared with the traditional superconducting quantum interferometer. A much smaller probe can achieve the same or higher positioning accuracy.
The prototype can effectively detect deep brain regions such as hippocampus and cerebellum, which can not be effectively detected by traditional brain magnetics. It can also be effectively applied to groups of young children, Parkinson's patients, etc., which are difficult to apply in traditional magnetoencephalography, in developmental psychology and brain diseases. The field of diagnosis and other fields has potential application prospects.
It is understood that magnetoencephalography equipment can detect the location and time course of neural activity by detecting the extra-cranial weak magnetic signal generated by brain nerve activity. It is an advanced technical means in brain science research and also has important applications in clinical medicine. . However, the traditional magnetoencephalography equipment based on superconducting quantum interferometer needs to operate at ultra-low temperature, the purchase and operation cost is high, and the probe position is fixed and far from the scalp, and the adaptability is poor, which greatly hinders the popularization of the technology.
Source: Science Network
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