Table 1.

The COGNAC Algorithm

repeat  1: Set the i-th target voxel as i = 1.  2: Set appropriate initial values to vi, Ωr, λ, compute ψi, Λr using Eqs. (10), (11), and ${\overline{\mathit{s}}}_i\left(t_k\right)$ using Eq (5) for k = 1, … , K. repeat   3: Update vi, Ωr, λ using Eqs. (8), (9), (13), (14).   4: Update ψi, Λr, ${\overline{\mathit{s}}}_i\left(t_k\right)$ with the updated values of vi, Ωr, λ using Eqs. (10), (11), (5).  until The cost function of Eq. (7) converges.  5: Set the target voxel to the (i + 1)-th voxel. until All voxels are scanned (i = N).