X-ray CT reconstruction

I have a sequence of X-ray projections. It was taken from all the directions. How can I get a cross-sectional CT image using these 2D projections from different angles?

Answer 1

[Matt J]

You could try iradon() or ifanbeam().

[Raisul]

but iradon() or ifanbeam() uses only one image and then rotate it to different angles to get the different positions. On the other hand, i have already images from different positions. how can i use all of these to make one cross-sectional CT

[ilanzhang]

iradon reconstruct the 2D image from multiangle 1D projections, so maybe you can choose the projection "line" in all views and arrage them into a 2D projection image named sinogram, and it is the R needed in iradon.

[oumi k]

it does not work with iradon()

Answer 2

[Walter Roberson]

https://www.mathworks.com/matlabcentral/fileexchange/34608-ct-reconstruction-package

https://www.mathworks.com/matlabcentral/fileexchange/35548-3d-cone-beam-ct--cbct--projection-backprojection-fdk--iterative-reconstruction-matlab-examples