It is also possible to set U1 voltage to a value near zero, for quadruple-field XRII.
在四视野X线影像增强器里也可能将U 1电压值设定为零左右。
The X-ray backscattering from the inner electrodes and the tube wall of an X-ray image intensifier (XRII) will degrade the spatial resolution and the contrast of an output image.
影像增强器内电极和管壳对X射线的背向散射将降低增强器输出图像的空间分辨率和对比度。
A serial port interface can be used to take control of the power supply, to set G1, G2 and G3 voltages, to select the XRII field, or to measure back the real electrode voltages (see chapter4).
一个串行端口接点可被用来控制电源，设定G 1, G2和G3电压，选择X线影像增强器视野，或延迟测量实际极间电压(看第4章)。
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