A Novel Interpolation Algorithm to Improve FDK Performance

According to the theory of CT reconstruction algorithm, mainly filter back projection algorithm, we make an effort to improve the quality of reconstructed image. In the aspect of interpolation algorithm, we propose a new weighted interpolation algorithm, which take full advantage of both nearest neighbor interpolation and bilinear interpolation. We apply it to FDK reconstruction algorithm and the experimental results show that the new interpolation algorithm could preserve the image edge details and also can effectively suppress noise while takes little computational resource cost.