Fig. 10From: Validation of the physiological background correction method for the suppression of the spill-in effect near highly radioactive regions in positron emission tomographyPlots of the CNR of the NEMA phantom spheres S1–S6 against the iteration for all the reconstruction techniques across the 20 full iterations and without post-filtering. The CNR was estimated using the mean activity values in the spheres and backgroundBack to article page