Magnetoencephalogram systems developed at KIT
Magnetoencephalogram systems developed at KIT
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DOI：
10.1109/77.783918
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发表时间：
1999-06-01
影响因子：
1.8
通讯作者：
Uehara, G
中科院分区：
文献类型：
--
作者：
Kado, H;Higuchi, M;Uehara, G
我们已经开发了脑磁图（MEG）的新系统。拾波线圈为同轴型一阶梯度仪，基线为50 mm。在白色噪声区，系统的磁场分辨率约为4fT/Hz（0.5）或0.8（fT/cm）/Hz（0.5）。该系统的独特之处在于无门架的水平杜瓦瓶，它是通过我们所说的“瓶中船”方法制造的。实现了100升容量的液氦消耗小于10升/天。卧式杜瓦瓶的优点之一是，由于杜瓦瓶的高度很低（0.89 m），因此安装空间很小。另一个优点是，患者可以在卧位进行测量，与传统的垂直型相比，卧位更放松。
We have developed new systems for magnetoencephalography (MEG). The pick up coil is a coaxial type first-order gradiometer with 50-mm base line. The magnetic field resolution of the system is about 4 fT/Hz(0.5) or 0.8 (fT/cm)/Hz(0.5) at white noise region. The unique feature of the system is the gantry-free horizontal dewar, which is fabricated through what we call a "ship-in-a-bottle approach". Less than 10-liter/day liquid helium consumption for the 100-liter capacity is realized. One of the merits of the horizontal dewar is that a small room is sufficient for installation because of the low height (0.89 m) of the dewar. Another merit is that the patient can be measured in lying position which is more relaxing compared to the conventional vertical type.