Figure 11.

Illustration of learning a deep reconstruction operator (a DNN) to operate on sinogram data such that, when backprojected, an image is obtained. ⁷⁹ This is an example of self-supervised deep-learned FBP, from Reader, ⁷⁹ show just by way of example for the case of a simulated CT slice, but the method is generally applicable. DNN, deep neural network; BP, backprojection; FP, forward projection.