Fig. 16From: Algorithms for joint activity–attenuation estimation from positron emission tomography scatterLog-likelihoods (individually normalized to [− 1,0]) in a single-voxel example for true and scattered coincidences, their maximum, and the joint likelihood of trues and scatter. a Low attenuation, ρtrue=0.2. b High attenuation, ρtrue=2. Red asterisks mark true maxima, respectively, while blue contour lines trace other maximaBack to article page