Reference-Driven Undersampled MR Image Reconstruction Using Wavelet Sparsity-Constrained Deep Image Prior

Table 2

RelErr, PSNR, and SSIM values of reconstruction by different methods under Cartesian undersampled mask.

Images	Methods		10%			20%
		RelErr (%)	PSNR (dB)	SSIM	RelErr (%)	PSNR (dB)	SSIM
Brain A	Zero-filling	21.63	21.6857	0.7101	15.26	24.7174	0.7695
	DIP	16.49	24.1475	0.8263	5.45	33.6852	0.9617
	RWS-DIP	6.92	31.5838	0.9486	3.21	38.2738	0.9836
Brain B	Zero-filling	35.26	20.2926	0.6391	18.74	25.7849	0.7608
	DIP	33.08	20.8466	0.7212	11.31	30.1983	0.9361
	RWS-DIP	15.96	27.1810	0.9000	7.59	33.6347	0.9694
Brain C	Zero-filling	32.53	21.3240	0.6600	15.99	27.4915	0.7860
	DIP	30.78	21.8126	0.7353	11.74	30.1815	0.9297
	RWS-DIP	18.09	26.4293	0.8744	8.41	33.0789	0.9635
Images	Methods		30%			40%
		RelErr (%)	PSNR (dB)	SSIM	RelErr (%)	PSNR (dB)	SSIM
Brain A	Zero-filling	5.39	33.7439	0.8430	4.02	36.3000	0.8590
	DIP	2.82	39.4789	0.9862	2.54	40.4871	0.9876
	RWS-DIP	2.01	42.3201	0.9917	1.67	43.9822	0.9942
Brain B	Zero-filling	16.80	26.7302	0.7699	8.89	32.2654	0.8302
	DIP	8.38	32.7954	0.9593	6.34	35.2549	0.9733
	RWS-DIP	5.73	36.0731	0.9795	4.35	38.4773	0.9864
Brain C	Zero-filling	11.03	30.7196	0.8346	7.94	33.5719	0.8597
	DIP	7.21	34.4198	0.9698	6.31	35.5848	0.9747
	RWS-DIP	5.73	36.4088	0.9808	4.88	37.8079	0.9845