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. 2012 Feb 3;39(2):1029–1041. doi: 10.1118/1.3678489

Figure 2.

Figure 2

(a) Spatial resolution and (b) noise level for MAP reconstructions for various numbers of iterations and for several values of the β hyper parameter. The noise level was estimated by the standard deviation of an ROI traced in the uniform background region, and the average value over 11 consecutive planes was calculated.