ART and SART implementation comparison

1 ART implementation

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// X0

For 1: iteration

For all projection images

Forward( X0 ) // normalize using the length of the ray

Backward( ) // * 0.1 as weighting

Update(X0)

end

end

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After 20 iterations we have images like this using SheppLogan

2 SART implemenation

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// X0

For 1: iteration

For all projection images

Forward( X0 ) // normalize using the length of the ray

Backward( ) // divided by the number of projection as weighting

end

Update(X0)

end

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After 20 iterations we have images like this using SheppLogan

3 Comparison of the profile