一种新的迭代消噪重建算法

A New Iterative CT Reconstruction for Removing Noise

从 Richardson格式入手 ,推出了一个更广义的新的迭代重建框架 .将 Fourier重建算子与滤波反投影重建算子与这个新的框架有机地结合起来 ,得到了杂交算法 - - Fourier迭代格式和 FBP迭代格式的重建算法 .其中 Fouri-er迭代格式具有与 FBP迭代格式相当的重建质量与消噪能力 ,同时又具有比其他迭代格式更高的计算效率 ,是一种实用的迭代消噪重建算法 .

A new iterative CT reconstruction frame was proposed. Fourier reconstruction operator and filtered back projection operator were incorporated into this frame to produce some hybrid methods: Fourier iterative reconstruction and FBP iterative reconstruction. The reconstruction quality and removing noise ability of Fourier iterative reconstruction is as good as FBP iterative reconstruction, while Fourier iterative reconstruction has higher effiency than other iterative reconstructions, so it is a practical iterative reconstruction method for removing noise.