PROBLEM TO BE SOLVED: To suppress generation of ghosts caused by sensor dislocation in a magnetoencephalogram or a magnetocardiogram obtained as an analysis result when carrying out magnetic field analysis by weak current generated in a measurement object such as a living body.SOLUTION: A magnetic sensor composed of a TMR element and an MI element, which are capable of measuring a magnetic field by the weak current without cooling or only by simple cooling, is used as a magnetic sensor 32. For example, in the case of the magnetoencephalogram, the plurality of magnetic sensors 32 are attached to the head 21 of a subject 2, and relative positional relationships among the respective magnetic sensors 32 are measured by a three-dimensional measuring device 8 before or after magnetic measurement, and the measurement results of the respective magnetic sensors 32 are subjected to the magnetic field analysis by a measuring device body based on the obtained relative positional relationships among the respective magnetic sensors 32. Accordingly, the generation of the ghost by the positional dislocation is suppressed in the magnetoencephalogram or the magnetocardiogram obtained as the analysis result, and highly accurate analysis can be carried out.COPYRIGHT: (C)2012,JPO&INPIT【課題】生体などの測定対象内に生じた微弱電流による磁場解析を行うにあたって、解析結果として得られる脳磁図や心磁図に、センサ位置ずれによるゴーストの発生を抑える。【解決手段】磁気センサ32には冷却無し或いは簡易な冷却のみで前記微弱電流による磁界を計測できるTMR素子MI素子から成る磁気センサを用い、たとえば前記脳磁図の場合、その磁気センサ32を被験者2の頭部21に複数被着し、磁気計測の前または後に、各磁気センサ32間の相対位置関係を3次元計測装置8で計測し、得られた各磁気センサ32間の相対位置関係に基いて、計測装置本体で前記各磁気センサ32の計測結果を磁場解析する。したがって、解析結果として得られる前記脳磁図や心磁図に、位置ずれによるゴーストの発生を抑え、高精度な解析を行うことができる。【選択図】図1
