Fig. 3From: Fast GPU-based Monte Carlo code for SPECT/CT reconstructions generates improved 177Lu imagesReconstructed SPECT images of the Jaszczak phantom filled with 177Lu activity in the spheres and the background. The activity concentration ratio between the spheres and background was equal to 25. a AC-OSEM. b RRC-OSEM. c SARec OSEM imagesBack to article page