PET: Simulation and Reconstruction of PET Images: This package implements different analytic/direct and iterative reconstruction methods of Peter Toft. It also offer the possibility to simulate PET data. WIAS R-packages for imaging: The packages are developed at the Weierstrass Institute for Applied Analysis and Stochastics within the Project ”A3 - Image and signal processing in medicine and biosciences” of the DFG Research Center MATHEON: