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. 2023 Sep 4;96(1150):20230292. doi: 10.1259/bjr.20230292

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© 2023 The Authors. Published by the British Institute of Radiology

This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.

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Figure 7. — LPD⁵⁸ when applied to example PET phantom data.⁵⁹ Figure adapted from data courtesy Massimiliano Colarieti-Tosti. The overall processing pipeline effectively has two rails: the top rail conducts sequential processing of the sinogram data and the lower rail conducts sequential processing of the image. These two processing subpipelines are interconnected by forward and backprojection operators (FP and BP) to map between the image domain and data domain. BP, backprojection; FP, forward projection; LPD, learned primal dual; PET, positron emission tomography.