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. Author manuscript; available in PMC: 2017 Feb 28.
Published in final edited form as: IEEE Trans Nucl Sci. 2009 Nov 6;5(6):2777–2788. doi: 10.1109/TNS.2009.2024677

Fig. 3.

Fig. 3

Comparing reconstructed images with different object-space pixelation schemes and noisy projection data. The entire phantom contains 250 μCi activity. All images were reconstructed using PML algorithm with 500 iterations. The penalization factor β was 10−14 for all reconstructions.