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. 2022 Oct 14;61(4):579–596. doi: 10.1007/s00411-022-01000-5

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© The Author(s) 2022

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Fig. 2 — Left: path-length bone marrow model (Whitwell and Spiers 1976; Beddoe et al. 1976). Right: 3D marrow tissues model (Watchman et al. 2005). Upper right pannel not drawn to scale. Figures reproduced with permission by IOP Publishing and SNMMI