Fig. 6
From: Quantification and dosimetry of small volumes including associated uncertainty estimation
Reconstructed non-uniform background images generated using non-uniform Poisson resampling. Dashed circles indicate the approximate location of source of interest. a Down sampling in half of the phantom only, with smooth transition to no down sampling in second half of phantom (profile indicated by dashed line in Fig. 7). b Linear down sampling performed across the entire phantom length (phantom profile indicated by solid line in Fig. 7)