为了减小误差在不同扫描行之间的传播，利用透射数据对重建结果进行校正。
For reducing the error propagations among scanning lines, the transmission data are used for rectifying the scattering reconstruction.
该方法基于MAP算法，通过利用梯度投影的方法对重建结果不断进行迭代优化得到最终的理想高分辨率影像。
In order to attain a high-resolution image, the algorithm is based on the MAP algorithm, solving the optimization by proposed iteration steps with using the gradient projection method.
因此提出了改进的偏折层析滤波反投影算法，数值模拟表明，改进算法在有效抑制倾斜现象的同时，对重建结果不会造成明显的失真。
Results show that the effect of projection noise on the reconstructed fields is represented by a slope function related to the filter used in deflection tomographic filtered back-projection algorithm.
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