Comparative Studies of Different System Models for Iterative Ct Image Reconstruction

ACKNOWLEDGEMENTS I would like to thank my advisor, Dr. Hengyong Yu, who first introduced me to the wonderful world of CT image reconstruction. He devoted a great deal of time to instruct me throughout the years. His inspiration, constant support and valuable advice encouraged me to conquer the hardship both in research and life. I would also like to thank my co-advisor, Dr. Ge Wang, whose valuable advices gave me many inspirations. I learned a lot from his great vision and innovative thinking. I would also like to thank all the lab members, such as Dr. Baodong Liu. Your helpful discussions have been greatly appreciated. Finally, I would like to thank my parents, sisters and brothers-in-law for their continued support. You are my eternal source of driving force.