Fig. 4
From: Quantitative 177Lu SPECT/CT imaging for personalized dosimetry using a ring-shaped CZT-based camera
Top panel—axial views of the NEMA phantom with cold background reconstructed using GE-OSEM, Q.Clear and Q.ClearRDP (96i1s). The purple line through the biggest sphere defines the cross section presented in the bottom panel. Bottom panel—cross section through the largest sphere for GE-OSEM (A), Q.Clear (B) and Q.ClearRDP (C) for different numbers of iterations and 1 subset. The black rectangular function represents the ideal profile. The red arrows point at the activity spill-out