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Summary of major parameters in the OS-SQS algorithm for PWLS*.
| Symbol | Description | Nominal values or range |
|---|---|---|
| Ψ R | Sparsifying operator in image regularization | First-order neighborhood difference |
| β R | Parameter controlling strength of image regularization | 101 ~ 103 |
| δ | Size of quadratic region in Huber penalty | 5 HU |
| niter | Number of iterations | 100 |
| M | Number of subsets | 20 |
| Ny | Number of measurements | 668 × 668 × 720 |
| Nμ | Number of voxels in reconstructed image | 412 × 512 × 512 |
