Fig. 7From: Optimizing reconstruction parameters for quantitative 124I-PET in the presence of therapeutic doses of 131ITransverse slice of the IEC phantom through the center of the hot spheres acquired with the phantom in the center position with 3.76 GBq of 131I in the background. The images on the top row (a–c) were reconstructed with OSEM using TOF information with 16 subsets and 2, 25, and 100 iterations, respectively. In the second row (d–f), images were similarly reconstructed but without making use of TOF informationBack to article page