2016_Imaging for Physicists

resolution modeling

Image space

Projection space

Forward projection

Estimated Projection

• May introduce Gibbs-artifacts • Not necessarily activity conservation

Current image estimate

+ convolution of PSF

Measured Projection

Comparison

Back- projection

Update Error Image

estimate

Error Projection

+ deconvolu- tion of PSF

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ESTRO Teaching Course Advanced Imaging: PET – Reconstruction, Contouring