【摘要】 目的　通过实验测试出CR成像板 (ImagingPlate ,IP)成像参数在使用过程中的变化 ,包括r值、宽容度 (L)、感光度 (S)。方法　主要使用铝梯双倍曝光量法对IP进行成像参量的测试。结果　新IP在刚刚使用时其成像参数r、L和S都较为合理 ,也都在正常范围之内。但是感光度 (S)并没有处于最佳状态而是经过一定时间的使用之后才达到最佳状态。结论　合理利用CR参数在使用中的变化 ,提高图像质量更多还原

【Abstract】 Objective To measure the imaging parameters including the values of r(r),latitude(L),sensitivity(S)etc of imaging plate of CR by experiments.Methods The double-exposed method of lead steps was utilized to determine the imaging parameters of imaging plates. Results All the parameters of new IPs were suitable to practice and in the right range of clinical radiographic applications. The sensitivity(S) , however, was not at its optimal point at the beginning of the utilization, it would take certain time.Conclusion It would improve the medical image quality to use the changing parameters of CR correctly.更多还原