## 5 Results and Discussion
### Quantitative Results
\begin{table}
\begin{tabular}{c c c c c c c} \hline \multicolumn{7}{c}{**fastMRI Brain**} \\ \hline
**Methods** & \multicolumn{3}{c}{**T1 WI**} & \multicolumn{3}{c}{**T2 WI**} \\ \hline  & **PSNR \(\uparrow\) 3** & **SSIM \(\uparrow\)** & **RLNE \(\downarrow\) 4** & **PSNR \(\uparrow\)** & **SSIM \(\uparrow\)** & **RLNE \(\downarrow\)** \\ \hline  & \multicolumn{3}{c}{1D Equispaced 4\(\times\) (Mean (Standard))} \\ \hline ZF 1  & 23.598 (1.064) & 0.618 (0.062) & 0.236 (0.040) & 22.837 (1.028) & 0.682 (0.036) & 0.274 (0.028) \\ \hline U-Net [51] & 36.155 (1.248) & 0.909 (0.028) & 0.056 (0.012) & 32.448 (1.041) & 0.915 (0.030) & 0.091 (0.010) \\ \hline STUN [15] & 38.428 (1.372) & 0.937 (0.020) & 0.043 (0.010) & 35.267 (1.322) & 0.940 (0.025) & 0.066 (0.010) \\ \hline PC-UNet [47] & 40.659 (1.153) & 0.959 (0.013) & 0.033 (0.006) & 36.963 (1.130) & 0.955 (0.019) & 0.054 (0.007) \\ \hline MINet [49] & 36.370 (1.727) & 0.909 (0.028) & 0.055 (0.015) & 32.679 (1.380) & 0.920 (0.033) & 0.089 (0.014) \\ \hline DuDoCAF [27] & 39.313 (0.881) & 0.942 (0.016) & 0.039 (0.006) & 35.500 (0.970) & 0.941 (0.021) & 0.064 (0.007) \\ \hline DuDoNet [14] & 39.868 (1.293) & 0.956 (0.014) & 0.036 (0.008) & 36.029 (1.220) & 0.951 (0.021) & 0.060 (0.008) \\ \hline MHCFIN 2  & **42.985 (1.246)** & **0.970 (0.010)** & **0.025 (0.005)** & **38.924 (1.172)** & **0.966 (0.016)** & **0.043 (0.006)** \\ \hline \multicolumn{7}{c}{1D Equispaced 8\(\times\) (Mean (Standard))} \\ \hline ZF & 20.666 (1.025) & 0.533 (0.069) & 0.329 (0.050) & 20.414 (0.978) & 0.597 (0.039) & 0.066 (0.007) \\ \hline U-Net [51] & 32.389 (1.774) & 0.868 (0.045) & 0.087 (0.022) & 28.497 (1.740) & 0.868 (0.057) & 0.145 (0.029) \\ \hline STUN [15] & 33.840 (1.455) & 0.872 (0.036) & 0.073 (0.019) & 30.605 (1.256) & 0.891 (0.041) & 0.112 (0.016) \\ \hline PC-UNet [47] & 37.363 (1.144) & 0.940 (0.019) & 0.048 (0.010) & 33.523 (1.069) & 0.934 (0.026) & 0.080 (0.009) \\ \hline MINet [49] & 32.504 (1.683) & 0.867 (0.040) & 0.086 (0.026) & 28.310 (1.678) & 0.874 (0.053) & 0.148 (0.030) \\ \hline DuDoCAF [27] & 36.858 (0.880) & 0.931 (0.016) & 0.051 (0.009) & 33.227 (0.930) & 0.927 (0.024) & 0.083 (0.008) \\ \hline DuDoNet [14] & 33.866 (1.404) & 0.885 (0.030) & 0.073 (0.018) & 30.404 (1.006) & 0.898 (0.034) & 0.114 (0.012) \\ \hline MHCFIN & **38.242 (0.964)** & **0.948 (0.017)** & **0.044 (0.007)** & **35.146 (0.981)** & **0.948 (0.019)** & **0.066 (0.007)** \\ \hline \multicolumn{7}{c}{1D Equispaced 12\(\times\) (Mean (Standard))} \\ \hline ZF & 19.783 (1.024) & 0.511 (0.072) & 0.365 (0.055) & 19.504 (0.925) & 0.560 (0.041) & 0.401 (0.035) \\ \hline U-Net [51] & 26.172 (1.070) & 0.732 (0.052) & 0.175 (0.031) & 22.314 (1.256) & 0.722 (0.068) & 0.292 (0.040) \\ \hline STUN [15] & 31.699 (1.396) & 0.835 (0.045) & 0.094 (0.024) & 28.170 (1.483) & 0.859 (0.058) & 0.149 (0.027) \\ \hline PC-UNet [47] & 34.906 (1.479) & 0.911 (0.032) & 0.065 (0.015) & 32.020 (1.027) & 0.921 (0.031) & 0.095 (0.010) \\ \hline MINet [49] & 30.079 (1.765) & 0.833 (0.047) & 0.114 (0.036) & 26.182 (1.870) & 0.837 (0.072) & 0.190 (0.046) \\ \hline DuDoCAF [27] & 34.481 (1.017) & 0.911 (0.020) & 0.067 (0.012) & 31.828 (0.835) & 0.917 (0.025) & 0.097 (0.008) \\ \hline DuDoRNet [14] & 31.753 (1.336) & 0.858 (0.034) & 0.093 (0.023) & 28.449 (0.911) & 0.869 (0.039) & 0.143 (0.013) \\ \hline MHCFIN & **36.277 (1.013)** & **0.913 (0.031)** & **0.055 (0.010)** & **32.302 (0.890)** & **0.922 (0.030)** & **0.092 (0.008)** \\ \hline \end{tabular}
\end{table} 
Table 2: Quantitative comparison of different reconstruction methods on fastMRI brain datasets in 1D equispaced undersampling pattern with three acceleration factors.