MEG system and method based on atom magnetometer

A technology of atomic magnetism and magnetoencephalography, applied in the field of magnetoencephalography system, which can solve the problems of products without forming magnetoencephalography, such as magnetoencephalography system

Active Publication Date: 2015-12-16
BEIJING QUANMAG HEALTHCARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Although the basic technical verification work for the atomic magnetometer has been completed, there is no magnetoencephalographic product or a practical magnetoencephalographic system, or there are some e...

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  • MEG system and method based on atom magnetometer
  • MEG system and method based on atom magnetometer

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Embodiment Construction

[0043] In the following description, numerous specific details are given to facilitate a more thorough understanding of the present invention to those skilled in the art. It should be understood that what is disclosed herein is only a representative preferred embodiment. Apparently, the present invention is not limited to any specific structures, functions, devices and methods described herein, and may also have other implementations or combinations of other implementations. The number of elements described in the present invention or shown in the drawings can also be changed arbitrarily as needed. In addition, in order to avoid confusion between other examples and the present invention, some technical features and details well known in the art have not been described.

[0044] The optical path diagram of the detection part of the atomic magnetometer used in the present invention is as figure 1 As shown, the steam chamber 1 is filled with alkali metal vapor and nitrogen and ...

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Abstract

The invention discloses an MEG system and method based on an atom magnetometer. A design scheme of an EMG capable of being freely detached in practical operation is provided to insulate heat and prevent extra magnetic field interference during the practical use. A gyroscope is added to all or representative magnetometers to acquire magnetometer directions; a great system is caused when plenty of magnetometer arrays are added to a brain magnetic hat; due to technical reasons and economic factors, a method for integrally processing optical signals is provided, so MEG spatial resolution can be improved, technological difficulties can be reduced and great economic effects can be achieved.

Description

technical field [0001] The invention relates to the field of magnetic brain imaging, in particular to a magnetoencephalography (Magnetoencephalography, MEG) system and method built using an optically pumped atomic magnetometer. technical background [0002] Magnetoencephalography (MEG) is a non-destructive brain function, brain imaging and brain disease diagnosis technique that infers brain activity inside the head by measuring the magnetic field generated by neural currents outside the head. The temporal resolution of magnetoencephalography is less than one millisecond, and the spatial resolution of localizing cortical activity is around 2-4 mm. Using the measured brain magnetic field distribution, under a suitable source model, the location of neurons that are stimulated to generate activity on the cortex can be uniquely determined. Magnetoencephalography can be used to study a variety of brain neural activity processes including spontaneous and evoked brain activity, and...

Claims

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Application Information

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IPC IPC(8): A61B5/055
Inventor 高家红孙溢凡周欣孙献平
Owner BEIJING QUANMAG HEALTHCARE CO LTD
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