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. 2016 Feb 18;36:32–43. doi: 10.1007/s40846-016-0111-6

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© The Author(s) 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 3 — Computer-simulated projections with added Poisson noise. a Simulated 9-pinhole collimated images of digital resolution phantom shown in Fig. 2a and b simulated CA collimated image of the same digital phantom