目的：探讨影响数字化X线摄影（DR）系统图像质量的因素。方法：分析DR系统电源组件、控制系统组件、X线球管、高压系统、平板系统等硬件的组成和系统软件、应用软件、图像处理软件等软件系统对图像质量的影响。结果：影响图像质量的因素有曝光条件、平板探测器的性能、功能强大的图像处理软件、性能良好的附件等方面。结论：合适的曝光条件、高性能的平板探测器、高性能的图像处理软件、功能强大的工作站处理软件、性能良好的附件等因素直接影响DR的图像质量,在设备采购和应用中必须加以重视。%Objective：To discuss influencing factors of DR picture quality . Methods The influencing factors of power supply, function units CU and DRC, x-ray tube and H.V. generator were analyzed. Results：The influencing factors of DR picture quality included exposure condition, flat panel detector, image processing software and attachment. Conclusion：Appropriate exposure condition, high performance flat pane detector and image processing software are very important for picture quality.
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