In dynamic tomography the object undergoes changes while projections are being acquired sequentially in time. The resulting inconsistent set of projections cannot be used directly to reconstruct an object corresponding to a time instant. Instead, the objective is to reconstruct a spatio-temporal representation of the object, which can be displayed as a movie. We analyze conditions for unique and stable solution of this ill-posed inverse problem, and present a recovery algorithm, validating it experimentally. We compare our approach to one based on the recently proposed GMLR variation on deep prior for video, demonstrating the advantages of the proposed approach.
@article{arxiv.2204.09935,
title = {Dynamic Tomography Reconstruction by Projection-Domain Separable Modeling},
author = {Berk Iskender and Marc L. Klasky and Yoram Bresler},
journal= {arXiv preprint arXiv:2204.09935},
year = {2024}
}