A system and method for brain structure imaging based on meg and eeg fusion

Abstract

The invention relates to a brain structure imaging system and method based on fusion of MEG and EEG. The system mainly includes: a magnetic shielding room, a magnetoencephalography measurement module, an EEG measurement module, a data synchronization and acquisition module, and a structural imaging module. The brain structure imaging method based on the fusion of MEG and EEG collects human MEG (magnetic brain signal) and EEG (electroencephalographic signal) at the same time. Therefore, according to the difference between the two, the brain structure image related to electrical conductivity can be obtained. The specific steps are to obtain the situation of the activity source in the brain according to the collected magnetic brain signal, calculate the potential received by each EEG electrode according to the obtained brain source, and compare it with the actually collected electrode value. By continuously modifying the size of each part of the brain structure, multiple calculations are performed until the difference between the two reaches the set value. At this time, the size of each part of the structure in the brain is the measured brain structure.

Description

technical field [0001] The invention relates to a brain structure imaging system and method in the field of structure imaging, in particular to a brain structure imaging system and method based on fusion of MEG and EEG. Background technique [0002] The study of human brain function and structure is a hot field of scientific research at present. The human brain contains a large number of nerve cells, and neural activities will generate electromagnetic fields. Existing electroencephalogram (EEG) and magnetoencephalogram (MEG) measurement equipment can detect the electromagnetic field information on the brain surface. MEG and EEG are non-invasive and fast-response. However, these two technologies are currently used for functional imaging and cannot reflect structural information. The existing traditional structural imaging is CT and magnetic resonance technology (MRI). CT radiation is relatively large, which is harmful to the human body. NMR technology requires an external ...

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Problems solved by technology

[0004] Problems to be solved by the technology of the present invention: to overcome the disadvantages that nuclear magnetic resonance technology cannot inspect subjects with metal in any part of the body and that CT technology is harmful to human body radiation, and provide a brain structure imaging system based on MEG and EEG fusion and Method, structural imaging can be performed for subjects with metal structures other than the head, and metal structures in other parts of the body have little effect on this method, which can satisfy the brain structure imaging of subjects with metal structures in the body (non-head containing metal) needs, and no radiation to the human body

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