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

Figure 3

Reconstructed images by (a) ISRA with 400 iterations, (b) ADMM-PL-400-120, (c) ADMM-CG-400-120, (d) ADMM-EM-400-120, (e) PWLS-EM with 400 iterations, (f) ADMM-PL-400-1, (g) ADMM-CG-400-1, and (h) ADMM-EM-400-1.

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(b)

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(e)

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(h)