ct-fan-beam-fbp-reconstruction's Introduction

Computed-tomography Fan-beam FBP reconstruction

This repository contains CT image reconstruction using Fan-beam Filtered back-projection. Appropriate weighting measures like Differential and Parker weighting can be applied. The reconstruction algorithm is applicable to short scan protocol as well.

FILE CONTENTS

FFBP_Weighted.m : Fan-beam Filtered back-projection function for two dimensional reconstruction.
SAMPLE_FFBP.m : Sample script to execute the Fan-beam FBP function with appropriate reconstruction parameters. This example script can be used to reconstruct the sample sinogram file " Sample_sinogram.sino ".
designFilter.m : Use it to design the filter with window of choice. Certain general windows are already incorporated like the shepp-logan, cosine, hann and hamming filter.
fbp2_window.m : Filter windows as used by Jeffrey A Fessler, "Michigan Image Reconstruction Toolbox,"
fbp_sino_filter.m : Filtering (Curved/ Arc detector) as used by Jeffrey A Fessler, "Michigan Image Reconstruction Toolbox,"
filterProjections.m : Filtering as in iradon function (Copyright 1993-2013 The MathWorks, Inc.).

References

Taguchi, K. Image Reconstruction Algorithms for X-Ray CT, 189–216. Medical Imaging Technology and Applications Troy Farncombe and Kris Iniewski CRC Press 2013.
D. L. Parker, Optimal short scan convolution reconstruction for fanbeam CT, Medical Physics, 9, 254–257, 1982.

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