2016_Imaging for Physicists

Summary: Reconstruction

 Today, iterative reconstruction (IR) algorithms are standard on all PET/CT systems  Superior image quality when compared to filtered back projection  Iteratively reconstructed images are characterized by ● number of iterations and subsets ● matrix and voxel size ● image zoom ● image smoothing, smoothing filter size or kernel (FWHM).  IR methods employing a sufficient number of iterations and subsets to ensure sufficient amount of convergence are preferred.  Reconstructed with and without AC recommended to allow inspection of AC artifacts.

29

ESTRO Teaching Course Advanced Imaging: PET – Reconstruction, Contouring