中文说明：主要用于图像重建的FBP，即滤波反投影，并且是基于直线扫描的有限角度的重建
English Description：
FBP, which is mainly used for image reconstruction, is filtered back projection, and is based on line scan of the limited angle reconstruction
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中文说明：主要用于图像重建的FBP，即滤波反投影，并且是基于直线扫描的有限角度的重建
English Description：
FBP, which is mainly used for image reconstruction, is filtered back projection, and is based on line scan of the limited angle reconstruction