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. 2013 Aug 12;3:63. doi: 10.1186/2191-219X-3-63

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Copyright ©2013 de Groot et al.; licensee Springer.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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SNR_normversus body mass. Signal-to-noise ratio normalized for the administered FDG dose and scan time per bed position (SNR_norm) versus body mass. Besides the best fits through the data, also their 95% confidence intervals are shown, and the best fit with the value of the parameter d fixed to 1 for (A) the Biograph TruePoint (TP) and for the Biograph mCT for three different reconstructions: (B) OSEM3D, (C) OSEM3D + PSF and (D) OSEM3D + PSF + TOF. The fit with the parameter d fixed to 1 corresponds to the situation where SNR_L can be kept constant by a quadratic relation between dose and body mass.