变换法中两种代表性的算法是 滤波反投影算法（Filtered BackProjection，FBP）和卷积反投影算法（Convolution BackProjection，CBP）。
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Filtered backprojection algorithm 滤波反投影算法
filtered-backprojection 滤波反投影
filtered backprojection algorithms 滤波反投影算法
filtered backprojection reconstruction 滤波反投影重建
a new filtered backprojection algorithm 滤波反投影算法
space-variant filtered backprojection algorithm 空间可变滤波反投影重建算法
Traditional filtered backprojection (FBP) method required complete projection data, which were often difficult or even impossible to acquire for objective reasons.
传统的滤波反投影算法(FBP)要求完备的投影数据，而实际检测中往往由于客观原因无法获得完全的投影数据。
The image reconstructed by this algorithm is better in the reconstruction accuracy than that reconstructed by the filtered backprojection and algebraic reconstruction techniques.
该算法重建的图像比常用的滤波反投影和代数重建等算法得到的精度高。
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