Flexible multi-lead cap-type brain magnetic instrument and high-precision imaging method thereof
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A multi-lead, magnetoencephalography technology, applied in the field of magnetoencephalography, can solve the problems of reduced imaging accuracy, poor skin-friendly properties, and increased weight of head-mounted devices, achieving improved imaging accuracy, low production costs, and high imaging accuracy Effect
Active Publication Date: 2019-04-16
南京国科精准医学科技有限公司
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However, the materials used in these two magnetic brain caps are traditional silicone/elastic cloth, which is not suitable for long-term wearing because of their poor skin-friendliness. Moreover, flexible wearing will cause unpredictable changes in the position of the magnetic sensor and the posture of the head relative to the subject. , although the use of the eye magnetic field measurement magnetic sensor to calibrate the position of all magnetic sensors is added to the Shanghai magnetoencephalometer, but this method cannot realize the measurement of the attitude of the magnetic sensor. It is also impossible to measure the initial posture of the device, and to a certain extent increases the weight of the headse
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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[0081] A kind of preparation method of skin-friendly paint is also provided below, comprising the following steps:
[0082] 1) Put the mixture of bamboo fiber powder, angelica powder, wormwood powder and pearl powder into the extraction tank, add deionized water, decoct at 80-100°C for 1-5 hours, filter and transfer the filtrate into the precipitation tank, After standing still, the supernatant is extracted, and the supernatant is concentrated to obtain mixture A;
[0083] 2) Weigh silicon hydrogel, natural latex, nano-zinc oxide powder, castor oil, peppermint essential oil, eucalyptus essential oil, binder, cross-linking agent, deionized water, join in the reaction kettle, heat and carry out mechanical stirring to Mix well to obtain mixture B;
[0084] 3) Mix mixture B and mixture A, stir at 40-80° C. for 1-5 hours, and obtain a skin-friendly coating after cooling.
[0085] The prepared skin-friendly coating is sprayed on the inner side of the cap body and the elastic restr...
Embodiment 1
[0088] A skin-friendly layer is provided on the inside of the cap body and the elastic restraint belt, and the skin-friendly layer is prepared by spraying a skin-friendly paint and drying;
[0089] The skin-friendly coating comprises the following raw materials in parts by weight:
[0090]
Embodiment 2
[0092] A skin-friendly layer is provided on the inside of the cap body and the elastic restraint belt, and the skin-friendly layer is prepared by spraying a skin-friendly paint and drying;
[0093] The skin-friendly coating comprises the following raw materials in parts by weight:
[0094]
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention discloses a flexible multi-lead cap-type brain magnetic instrument and a high-precision imaging method thereof. The brain magnetic instrument comprises a flexible multi-lead cap, a magnetic sensor array, a magnetic shielding and compensation module, a magnetic sensor position and posture calibration module, a signal detection and storage module and a brain magnetic imaging module. According to the flexible multi-lead cap-type brain magnetic instrument, by introducing the magnetic sensor position and posture calibration module, the center positions of a magnetic sensor and a standard point can be determined, the posture of the magnetic sensor relative to the tested head can be determined, and the imaging precision can be improved. According to the MEG imaging method based on CT and multi-mode MRI, multi-mode MRI at least comprises T1, T2 and DT1, and the problem of low precision of brain magnetic imaging of infants can be solved. The flexible multi-lead cap-type brain magnetic instrument is flexible to use, comfortable to wear and low in production cost; the imaging method of the instrument is easy to operate and high in imaging precision.
Description
technical field [0001] The invention relates to the field of magnetoencephalometers, in particular to a flexible multi-lead cap-type magnetoencephalometer and a high-precision imaging method thereof. Background technique [0002] The magnetoencephalometer (MEG) uses sophisticated electronic instruments such as high-sensitivity magnetic sensors to measure and record the extremely weak magnetic field information generated by the intracranial cortical neural activity outside the subject's head, and is established by signal processing and other methods. The correlation between the above-mentioned magnetic field information and neural activity (magnetic brain signal imaging), and then assisting the research of scientific issues such as diseases / brain cognition. Compared with brain signal acquisition instruments such as MRI, MEG signal time resolution is higher, about 1ms, which is more suitable for capturing and analyzing rapidly changing neural activities. Compared with EEG, ME...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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