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Cascaded Dilated Dense Network with Two-step Data Consistency for MRI Reconstruction
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Measured effects reported in the paper
| What was changed | Where | Measured | Effect |
|---|---|---|---|
| add geometrically increasing dilation and two-step data consistency (variants CDNwithDC, CDDNwithDC, CDDNwithTDC) (ablation) | cascaded dense network · Cardiac MRI, 30% mask | PSNR/SSIM | Helped |
| replace one-step data consistency with two-step data consistency (TDC) (ablation) | CDDN · Cardiac MRI | PSNR/SSIM | Helped |
| add dilated convolution to dense blocks (ablation) | cascaded dense network · Cardiac MRI | PSNR/SSIM | Helped |
| cascade 10 sub-networks instead of 5 | CDDN with TDC · Cardiac MRI, 15% mask | PSNR (dB): 35.24 -> 35.61 | Helped |
| use CDDN with TDC instead of DC-CNN | DC-CNN · Cardiac MRI, 15% mask | PSNR (dB): 34.87 -> 35.24 | Helped |
| use CDDN with TDC instead of RDN | RDN · Cardiac MRI, 15% mask | train time (min/epoch): 12.0 -> 3.0 | Helped |
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