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作者目前使用的心磁图记录装置是BTI公司的二次微分型SQUID磁通计。在市内的一般医院检查室内使用本装置时,不用任何特殊的磁力框,就可很容易地记录出稳定的心磁图。 心磁图的记录方法 让受检者摘掉手表及身上的金属物,仰卧床上,将传感器尽量接近胸壁,并与胸壁保持垂直。一般来说,磁力是个矢量,即使在一个点上也具有三维成分,用这种方法只能得到与胸壁垂直的磁场(准线方向磁场)。心磁图的记录部位尚无统一规定,通常使用栅极系统在胸壁的多处位置记录心磁图,然后求出磁场分布,推断心电位。作者使用的栅极系统纵轴是穿过V_3R、V_1—4及V_4、V_5的中点与身体长轴平行的线(0～4,4＇),横轴是与第1至第6肋间及胸骨缘平行的线,用这些线的交点描记心磁图。
The currently used magnetocardiograph recording device is a BTI Quadratic Differential SQUID Fluxmeter. When using this device in a general hospital examination room in the city, a stable magnetocardiogram can be easily recorded without any special magnetic frame. Magnetoencephalography method for subjects to pick up the watch and body metal objects, lying on the bed, the sensor as close as possible to the chest wall, and vertical to the chest wall. In general, a magnetic force is a vector that has a three-dimensional composition even at one point. In this way, only a magnetic field perpendicular to the chest wall (magnetic field in a line direction) can be obtained. Magnetoencephalography records there is no uniform record of the provisions of the grid system is usually used at many locations in the chest wall to record the magnetocardiography, and then find the magnetic field distribution, inference of cardiac potential. The vertical axis of the grid system used by the author is a line (0-4, 4 ’) passing through the midpoints of V_3R, V_1-4 and V_4, V_5 parallel to the long axis of the body, And the sternal edge of the line parallel, with these lines of tracing the magnetoencephalography.