# Experimental and Geant4 Simulation Study of MURA Mask for Scintimammography
## 3 Results and Discussion
### Simulation Extended Work  
As seen from Figures 5 and 6, we can calculate the full width at half maximum and the signal-to-background ratio (here denoted by a contrast parameter) for a given imaging configuration. Moreover, the simulation of different TBR values and locations allowed us to tabulate the data in Table 1. A comparison of the simulated data corresponding to locations 17-22 (almost completely occupying the whole phantom volume) led to an FWHM varying from 7.91 to 8.08 mm and a contrast varying from 3.29 to 4.07. Similarly, FWHM and contrast values vary from 7.84 to 8.09 and from 3.27 to 4.21, respectively, for locations 1-16. We can conclude that all of the configurations were detectable with an average FWHM of \(7.99\pm 0.04\) mm and contrast parameter of \(3.71\pm 0.18\) mm. Figure 5: Simulated (**a**) and decoded (**b**) image for location 17 and TBR = 10. Figure 6: Horizontal and vertical profiles for decoded image of the studied case: location 17 and TBR = 10. \begin{table}
\begin{tabular}{c c c c c c c c} \hline
**Location** & **TBR** & **FWHM** & **Contrast** & **Location** & **TBR** & **FWHM** & **Contrast** \\ \hline \multirow{8}{*}{\(1\)} & 2 & 8.002 & 3.782 & \multirow{8}{*}{6} & 2 & 7.838 & 3.830 \\ \cline{2-6}  & 3 & 7.985 & 3.968 & & 3 & 7.9 \begin{table}
\begin{tabular}{c c c c c c c c} \hline
**Location** & **TBR** & **FWHM** & **Contrast** & **Location** & **TBR** & **FWHM** & **Contrast** \\ \hline \multirow{8}{*}{5} & 2 & 7.984 & 3.696 & \multirow{8}{*}{10} & 2 & 8.085 & 3.845 \\ \cline{2-6}  & 3 & 7.897 & 3.871 & & 3 & 7.961 & 3.666 \\ \cline{2-6}  & 4 & 8.004 & 3.465 & & 4 & 7.936 & 3.875 \\ \cline{2-6}  & 5 & 7.973 & 3.842 & & 5 & 8.088 & 4.207 \\ \cline{2-6}  & 6 & 7.939 & 3.700 & 6 & 8.040 & 3.724 \\ \cline{2-6}  & 7 & 7.918 & 3.740 & 7 & 8.016 & 3.723 \\ \cline{2-6}  & 8 & 7.975 & 3.914 & & 8 & 7.895 & 3.563 \\ \cline{2-6}  & 9 & 8.009 & 3.685 & & 9 & 8.050 & 3.669 \\ \cline{2-6}  & 10 & 7.949 & 3.721 & & 10 & 8.030 & 3.830 \\ \hline \multirow{8}{*}{11} & 2 & 8.042 & 3.898 & \multirow{8}{*}{17} & 2 & 7.993 & 3.699 \\ \cline{2-6}  & 3 & 7.978 & 3.701 & & 3 & 7.933 & 3.426 \\ \cline{2-6}  & 4 & 8.025 & 3.811 & & 4 & 7.973 & 3.728 \\ \cline{2-6}  & 5 & 7.838 & 3.352 & & 5 & 7.994 & 3.691 \\ \cline{2-6}  & 6 & 7.964 & 3.831 & & 6 & 7.999 & 3.731 \\ \cline{2-6}  & 7 & 7.999 & 4.126 & & 7 & 7.931 & 3.892 \\ \cline{2-6}  & 8 & 7.958 & 3.399 & & 8 & 7.981 & 3.505 \\ \cline{2-6}  & 9 & 8.035 & 3.776 & & 9 & 7.927 & 3.852 \\ \cline{2-6}  & 10 & 7.956 & 3.635 & & 10 & 8.050 & 3.821 \\ \hline \multirow{8}{*}{12} & 2 & 7.955 & 3.651 & \multirow{8}{*}{18} & 2 & 8.020 & 4.075 \\ \cline{2-6}  & 3 & 8.010 & 3.537 & & 3 & 7.930 & 3.570 \\ \cline{2-6}  & 4 & 7.882 & 3.889 & & 4 & 7.984 & 3.372 \\ \cline{2-6}  & 5 & 7.982 & 3.638 & & 5 & 7.961 & 3.897 \\ \cline{2-6}  & 6 & 7.970 & 3.960 & & 6 & 8.046 & 3.640 \\ \cline{2-6}  & 7 & 7.984 & 3.888 & & 7 & 7.911 & 3.520 \\ \cline{2-6}  & 8 & 8.004 & 3.616 & & 8 & 7.987 & 3.530 \\ \cline{2-6}  & 9 & 7.921 & 3.718 & & 9 & 8.078 & 3.667 \\ \cline{2-6}  & 10 & 7.986 & 4.050 & & 10 & 8.001 & 3.992 \\ \hline \multirow{8}{*}{13} & 2 & 7.995 & 3.593 & \multirow{8}{*}{19} & 2 & 7.934 & 3.664 \\ \cline{2-6}  & 3 & 7.966 & 4.072 & & 3 & 7.981 & 3.843 \\ \cline{2-6}  & 4 & 7.984 & 3.590 & & 4 & 7.975 & 3.780 \\ \cline{2-6}  & 5 & 7.977 & 3.505 & & 5 & 7.994 & 3.711 \\ \cline{2-6}  & 6 & 8.006 & 3.748 & & 6 & 8.002 & 3.846 \\ \cline{2-6}  & 7 & 7.988 & 3.812 & & 7 & 7.936 & 3.880 \\ \cline{2-6}  & 8 & 7.973 & 3.770 & & 8 & 7.956 & 3.355 \\ \cline{2-6}  & 9 & 8.081 & 3.859 & & 9 & 7.978 & 3.704 \\ \cline{2-6}  & 10 & 7.944 & 4.022 & & 10 & 8.007 & 3.294 \\ \hline \end{tabular}
\end{table} 
Table 1: _Cont._Hence, a summary of the average and the standard deviation of FWHM and contrast parameter for all studied locations (data in Table 2) were given for more clarification. Previous remarks confirm that other work [11,19] declared the possible use of MURA mask as an alternative to collimators for scintillammography imaging modalities.