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Examples of the effect of scatter in optical CT imaging: (a) square field image with diagonal cross artifact and (b) gamma map highlighting cross artifact (Islam et al 2003); (c) rendered optical CT image of a ‘funnel phantom’ and (d) profiles of reconstructed optical density across funnel phantom, showing both under- and over-estimation of the parameter (Bosi et al 2007, 2009b). Reproduced with permission.
