Three dimensionally configured SQUID vector gradiometers for biomagnetic measurement
Three dimensionally configured SQUID vector gradiometers for biomagnetic measurement
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DOI：
10.1088/0953-2048/16/12/027
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发表时间：
2003-12-01
影响因子：
3.6
通讯作者：
Komori, H
中科院分区：
文献类型：
--
作者：
Adachi, Y;Kawai, J;Komori, H
我们提出了一种复合超导量子干涉器件（SQUID）梯度计，具有一个轴向型梯度拾波线圈和两个平面型梯度拾波线圈。三个梯度计以彼此正交的位置内置于单个模块中，并且两个平面型梯度计的拾波线圈是同心的。因此，传感器可以将活体中的动作电流引起的磁场检测为特定点处的准三维矢量。传感器的外观与我们传统的轴向型梯度SQUID磁力计相同。因此，新传感器可以安装在我们的传统传感器阵列上，无需进行大的修改。我们将新型传感器应用于 SQUID 磁力计系统，用于脊髓诱发磁场，并成功测量了小动物脊髓的磁场。
We proposed a composite superconducting quantum interference devices (SQUIDs) gradiometer with an axial-type gradiometric pick-up coil and two planar-type gradiometric pick-up coils. Three gradiometers are built into a single module in orthogonal position to each other and the pick-up coils of two planar-type gradiometers are concentric. Therefore, the sensor can detect magnetic fields elicited by action currents in a living body as a quasi three-dimensional vector at a specific point. The outward form of the sensors is identical to our conventional axial-type gradiometric SQUID magnetometer. Therefore, the new sensor can be mounted on our conventional sensor array without large modification. We applied the new sensors to the SQUID magnetometer system for the spinal cord evoked magnetic fields and successfully measured the magnetic fields from the spinal cords from small animals.