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. Author manuscript; available in PMC: 2014 Aug 21.
Published in final edited form as: Phys Med Biol. 2013 Aug 2;58(16):R161–R186. doi: 10.1088/0031-9155/58/16/R161

Figure 6.

Figure 6

Less is lower – Interior tomography reduces radiation dose [85]. (a) The image reconstructed from a global scan using a CNT-based micro-CT system at University of North Carolina, with the white circle for a cardiac ROI, (b) the local magnification of the ROI in (a), and (c) a sparsity-model-based interior micro-CT reconstruction from 400 projections after 60 iterations (without precise knowledge of any subregion in the ROI), (d)–(f) images reconstructed from 200, 100 and 50 projections to reduce radiation dose to 50%, 25% and 12.5% of that for (c), respectively.