The outer materials and the edge of FTO produce the main scatter of the object.In order to reduce the scatter of the edge of FTO and BPC, a graded collimator is used in the radiographic system.
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- 利用坡度准直器对系统散射严重的区域进行的降散射,表明坡度准直器是一个很好的降散射器件,能有效提高图像质量。