5 papers
Improving depth-resolution, in-plane contrast, and reducing non-uniformity artifacts for wide-angle DBT
Emil Y. Sidky, Adrian A. Sanchez, John Paul Phillips +4
Purpose: This work aims to develop an image reconstruction algorithm for wide-angle digital breast tomosynthesis (DBT) that has improved depth resolution and in-plane contrast whil…
Efficient primal-dual algorithm for imaging applications with matrix stacking, applied to DBT image reconstruction
Emil Y. Sidky, John Paul Phillips, Zheng Zhang +3
The primal-dual hybrid gradient (PDHG) algorithm for solving convex optimization problems that arise in tomographic imaging is revisited. In particular, simplification of the selec…
Notes on the primal-dual algorithm for convex optimization applied to X-ray tomographic image reconstruction
Emil Y. Sidky, Xiaochuan Pan
The purpose of these notes is to provide background on understanding the primal-dual algorithm of Chambolle and Pock [1] for imaging scientists. The presentation focuses on providi…
Non-unique water and contrast agent solutions in dual-energy CT
JP Phillips, Emil Y. Sidky, Fatma Terzioglu +3
The goal of this work is to study occurrences of non-unique solutions in dual-energy CT (DECT) for objects containing water and a contrast agent. Previous studies of the Jacobian o…
A directional total variation minimization algorithm for isotropic resolution in digital breast tomosynthesis
Emil Y. Sidky, Xiangyi Wu, Xiaoyu Duan +9
An optimization-based image reconstruction algorithm is developed for contrast enhanced digital breast tomosynthesis (DBT) using dual-energy scanning. The algorithm minimizes direc…