公开(公告)号：US20050234329A1

公开(公告)日：2005-10-20

申请号：US11096142

申请日：2005-03-31

申请人： Robert Kraus ,  Michelle Espy ,  Andrei Matlachov ,  Petr Volegov

发明人： Robert Kraus ,  Michelle Espy ,  Andrei Matlachov ,  Petr Volegov

IPC分类号： A61B5/04 ,  A61B5/0484 ,  A61B5/05

CPC分类号： A61B5/0484 ,  A61B5/04004 ,  A61B5/04009 ,  A61B5/6814

摘要： An apparatus measures electromagnetic signals from a weak signal source. A plurality of primary sensors is placed in functional proximity to the weak signal source with an electromagnetic field isolation surface arranged adjacent the primary sensors and between the weak signal source and sources of ambient noise. A plurality of reference sensors is placed adjacent the electromagnetic field isolation surface and arranged between the electromagnetic isolation surface and sources of ambient noise.

摘要翻译： 一种装置测量来自弱信号源的电磁信号。 多个主传感器被放置在与弱信号源功能接近的位置，其中电磁场隔离表面布置在主传感器附近以及弱信号源和环境噪声源之间。 多个参考传感器被放置在电磁场隔离表面附近并且布置在电磁隔离表面和环境噪声源之间。

公开(公告)号：US20070252595A1

公开(公告)日：2007-11-01

申请号：US11678023

申请日：2007-02-22

申请人： Petr Volegov ,  Andrei Matlachov ,  John Mosher ,  Michelle Espy ,  Robert Kraus

发明人： Petr Volegov ,  Andrei Matlachov ,  John Mosher ,  Michelle Espy ,  Robert Kraus

IPC分类号： A61B5/055

CPC分类号： A61B5/055

摘要： Using resonant interactions to directly and tomographically image neural activity in the human brain using magnetic resonance imaging (MRI) techniques at ultra-low field (ULF), the present inventors have established an approach that is sensitive to magnetic field distributions local to the spin population in cortex at the Larmor frequency of the measurement field. Because the Larmor frequency can be readily manipulated (through varying Bm), one can also envision using ULF-DNI to image the frequency distribution of the local fields in cortex. Such information, taken together with simultaneous acquisition of MEG and ULF-NMR signals, enables non-invasive exploration of the correlation between local fields induced by neural activity in cortex and more ‘distant’ measures of brain activity such as MEG and EEG.

摘要翻译： 本发明人利用超低场（ULF）中的磁共振成像（MRI）技术直接使用共振相互作用和层析成像对人脑中的神经活动图像，建立了对旋转群体局部的磁场分布敏感的方法 在皮质中的拉莫尔频率测量领域。 由于Larmor频率可以容易地被操纵（通过变化的B＆gt; m），所以也可以设想使用ULF-DNI对皮层中的局部场的频率分布进行成像。 这些信息与MEG和ULF-NMR信号的同时采集一起使得能够非侵入性地探索由皮层神经活动引起的局部区域与脑活动（例如MEG和EEG）的更远的“测量”之间的相关性。