ADMM-EM Method for -Norm Regularized Weighted Least Squares PET Reconstruction

Figure 5

MAE and cost function versus the number of inner loops, where the number of outer loops is fixed to 400 for a sufficient convergence: (a) MAE and (b) cost function. Note that the samples of the iteration number of inner loop are collected every 3 iterations during the experiment.

(a)

(b)