Objective:To obtain suitable digital radiologic exposure factors of CR and DR by measuring stability of their X-raytubevoltage and exposure time.
目的：通过测试数字成像设备的X线机管电压和曝光时间稳定性，探讨数字成像摄影条件的选择原则。
2
Conclusion Radiation injuries may effectively decreased with reducing X-raytubevoltage and exposure level under the precondition of X-ray image quality to be guaranteed.
结论在保证X线图像质量前提下，降低X射线管电压和曝光量，可以有效地减少放射性损害。
3
The remainder molecules in the vacuum tube will be ionized by X-ray irradiation, the ionization current can be detected at a constant DC voltage.