2016_Imaging for Physicists

Filtered Backprojection FBP

 Backprojection of all projections yields a blurred image.  Unblurring Operation = convolution with an edge enhancing filter  1D-convolution of the sinogram with a ramp filter that enhances high frequencies (Linearity of projection operation allows to convolve projection data with a filter!)

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ESTRO Teaching Course Advanced Imaging: PET – Reconstruction, Contouring