| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a magnetoencephalographic meter can reduce the effect of a magnetic field and an electromagnetic wave on the measurement of the magnetic field of a living body and can enhance the measuring precision of the magnetic field of the living body. <P>SOLUTION: The magnetoencephalographic meter 1 includes an SQUID sensor 3 for detecting the magnetic field produced from the living body, a bottomed cylindrical Dewer 7 housing the SQUID sensor 3 in its bottom part 7b, the cylindrical magnetic shield body 11 provided in the periphery of the outer peripheral surface 7a of the Dewer 7 housing the SQUID sensor 3 to shield the SQUID sensor 3 from external magnetism, a stage 20 for mounting an examinee P so that the head of the examinee P is arranged at a measuring position H of the magnetic field of the living body by the SQUID sensor 3, and the auxiliary shield 21 provided in parallel to the magnetic shield body 11 so as to cover the space above the stage 20 on the side of the bottom part 7b of the Dewer 7 to shield the SQUID sensor 3 from an external electromagnetic wave. <P>COPYRIGHT: (C)2010,JPO&INPIT |
