论文标题
平行梁X射线重建中像素基的革兰氏过滤和正弦插值
Gram filtering and sinogram interpolation for pixel-basis in parallel-beam X-ray CT reconstruction
论文作者
论文摘要
平行梁X射线CT的关键方面是向前和背部投影，但其计算负担仍然是应用程序的障碍。我们提出了一种通过精确计算革兰氏滤波器并最佳地插值来提高相关算法的性能的方法。另外，检测器模糊效应可以有效地包括在我们的模型中。我们在分析幻象和真实CT图像的实验中显示了速度和质量的速度和质量。
The key aspect of parallel-beam X-ray CT is forward and back projection, but its computational burden continues to be an obstacle for applications. We propose a method to improve the performance of related algorithms by calculating the Gram filter exactly and interpolating the sinogram signal optimally. In addition, the detector blur effect can be included in our model efficiently. The improvements in speed and quality for back projection and iterative reconstruction are shown in our experiments on both analytical phantoms and real CT images.
