Research Article
Fast Compressed Sensing MRI Based on Complex Double-Density Dual-Tree Discrete Wavelet Transform
Table 1
Numerical results for an axial brain MR image by different reconstructed methods using radial sampling mask with
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| | Sampling ratio | Algorithms | SNR (dB) | Rel.Err (%) | SSIM |
| | 15% | FISTA-DWT | 14.51 | 4.99 | 0.7461 | | FISTA-CDT | 17.26 | 3.76 | 0.8393 | | FISTA-CDDDT | 20.26 | 3.19 | 0.9328 |
| | 18% | FISTA-DWT | 17.68 | 3.28 | 0.8409 | | FISTA-CDT | 21.15 | 2.41 | 0.9246 | | FISTA-CDDDT | 22.74 | 2.17 | 0.9558 |
| | 20% | FISTA-DWT | 19.84 | 2.61 | 0.8703 | | FISTA-CDT | 22.53 | 1.88 | 0.9427 | | FISTA-CDDDT | 23.82 | 1.76 | 0.9610 |
| | 25% | FISTA-DWT | 20.94 | 1.76 | 0.9067 | | FISTA-CDT | 24.37 | 1.30 | 0.9544 | | FISTA-CDDDT | 25.17 | 1.25 | 0.9651 |
| | 28% | FISTA-DWT | 22.35 | 1.36 | 0.9242 | | FISTA-CDT | 25.42 | 1.00 | 0.9600 | | FISTA-CDDDT | 26.01 | 0.99 | 0.9675 |
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