精确正弦图:体模Radon变换的解析方法
Exact sinogram: an analytical approach to the Radon transform of phantoms
摘要:
该方法可以作为MRI数值方法验证的金标准。在某些特殊情况下,可以解析计算体模的Radon变换或正弦图。在这项工作中,我们提出了分析公式来计算精确的正弦图的三类幻影。我们比较使用离散Radon变换,产生一个近似的正弦图,和相应的分析正弦图的图像重建。
英文摘要:
Phantoms can serve as a gold standard for the validation of MRI numerical methods. In some special cases, it is possible to compute analytically the Radon transform, or sinogram, of a phantom. In this work, we present analytical formulae to compute the exact sinograms of three classes of phantoms. We compare the use of the discrete Radon transform, that yields an approximate sinogram, and the correspondent analytical sinogram for image reconstruction.
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