Learned Shrinkage Approach for Low-Dose Reconstruction in Computed Tomography

Figure 1

Graphs of the MSE values ‖𝑓₀−𝑓‖²₂ (a) and the gradient penalty values 𝐐(𝑓₀,𝑓) (b) as a function of the cutoff frequency.

(a)

(b)