Table 10.

Ablation study on MRI-SPECT brain dataset.

Variant	Component	EN	SSIM	SF	MSE	PSNR	RMSE	Mean metric error
A1	MSML-Dense only	1.9214	0.8812	5.1847	0.0081	69.0423	0.0901	8.6831
A2	Swin only	1.9508	0.8903	5.0126	0.0074	69.4218	0.0862	8.5947
A3	Full model + MAE only	1.9625	0.8841	5.2194	0.0072	69.6135	0.0847	8.5412
A4	Full model + MAE + SSIM	1.9781	0.8962	5.2918	0.0066	70.1247	0.0812	8.4536
A5	MSML-DenseXmer (Full)	1.9863	0.8996	5.3511	0.006	70.4893	0.0701	8.4164