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  Indian J Med Microbiol
 

Figure 7: Root mean square error of the images reconstructed by maximum likelihood expectation maximization versus the number of iterations (up to 50 iterations), using the Siddon algorithm, the proposed line integral model, and hybrid model: (a) Noiseless data and (b) noisy data

Figure 7: Root mean square error of the images reconstructed by maximum likelihood expectation maximization versus the number of iterations (up to 50 iterations), using the Siddon algorithm, the proposed line integral model, and hybrid model: (a) Noiseless data and (b) noisy data