The Positioning of Magnetometer Pickup Coil in Dewar by Artificial Signal Source
The Positioning of Magnetometer Pickup Coil in Dewar by Artificial Signal Source
复制标题
人工信号源对杜瓦瓶中磁力计拾音线圈的定位
DOI：
--
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
Y. Ishibashi
中科院分区：
文献类型：
--
作者：
M. Higuchi;K. Chinone;N. Ishikawa;H. Kado;N. Kasai;M. Nakanishi;M. Koyanagi;Y. Ishibashi
为了对生物磁源进行定位，需要精确确定SQUID传感器的位置。通常在生物磁测量中，传感器被移动到在对象上绘制的点附近。这种操作通常是通过眼睛进行的。为了更精确地定位，使用了以下两种方法。一种方法是通过在机架和床体上贴上阅读刻度来确定被测体和装有SQUID的杜瓦瓶的位置。另一种方法是利用放置在被测物上的接收器和安装在杜瓦瓶上的发射器来确定杜瓦瓶与被测物的相对位置。在这些方法中，测量杜瓦瓶的位置，并根据杜瓦瓶和SQUID保持器的结构估计传感器的位置。然而，由于低温下杜瓦瓶和SQUID保持器的应变是未知的，所以SQUID传感器在液氦中的位置不能精确确定。要求直接确定受试者与SQUID传感器的相对位置。
It is necessary to determine precisely the position of a SQUID sensor for estimating the location of biomagnetic source. Usually in biomagnetic measurement, the sensor is moved near the points which are plotted on the subject. This operation is usually carried out by eye. For more precise positioning, the following two methods have been used. One is the method that the positions of the both the subject and the dewar in which SQUID is installed are determined by reading scales patched on a gantry and a bed. The other is that the relative position of the dewar to the subject is determined by using receivers on the subject and a transmitter mounted on the dewarl. In these methods, the position of the dewar is measured and the position of the sensor is estimated from the structure of the dewar and the SQUID holder. However the SQUID sensor position in liquid helium cannot be determined precisely because the strains of the dewar and the SQUID holder caused at low temperature are unknown. It is required that the relative position of the subject to the SQUID sensor is determined directly.
DOI：
10.1073/pnas.85.22.8732
发表时间：
1988
影响因子：
11.1
作者：
Yamamoto,T;Williamson,SJ;Kaufman,L;Nicholson,C;Llinás,R
通讯作者：
Llinás,R