TABLE 1.

Quantitative results of synthetic‐MR images using U‐Net compared with the ground‐truth images evaluated using PSNR, MSE, MAE, and SSIM metrics on the test dataset for all translations

Translation	PSNR $\uparrow$ (dB)	MAE $\downarrow$	MSE $\downarrow$	SSIM $\uparrow$
$\mathrm{T}1\to T2$	29.45 ± 1.72	0.0124 ± 0.0027	0.0012 ± 0.0004	0.932 ± 0.023
$\mathrm{T}2\to \mathrm{T}1$	29.44 ± 1.85	0.0149 ± 0.0050	0.0012 ± 0.0005	0.937 ± 0.020
$\mathrm{T}1\to \mathrm{FLAIR}$	33.25 ± 1.55	0.0086 ± 0.0020	0.0005 ± 0.0002	0.946 ± 0.013
$\mathrm{FLAIR}\to \mathrm{T}1$	30.73 ± 1.81	0.0125 ± 0.0038	0.0009 ± 0.0004	0.946 ± 0.017
$\mathrm{T}2\to \mathrm{FLAIR}$	33.01 ± 1.66	0.0089 ± 0.0027	0.0005 ± 0.0002	0.944 ± 0.015
$\mathrm{FLAIR}\to \mathrm{T}2$	29.57 ± 1.78	0.0120 ± 0.0036	0.0012 ± 0.0005	0.936 ± 0.022

The vertical arrow's direction indicates the trend for better results and higher image qualities. Horizontal arrows indicate the direction of synthesis. Results reported as the mean ± 1 SD.