"Version: 20191201"--Title page verso.Includes bibliographical references.part I. Background. 1. Background knowledge -- 1.1. Imaging principles and a priori information2. Tomographic reconstruction based on a learned dictionary -- 2.1. Prior information guided reconstruction -- 2.2. Single-layer neural network -- 2.3. CT reconstruction via dictionary learning -- 2.4. Final remarks3. Artificial…