Region based 4D tomographic image reconstruction: application to cardiac X-ray CT

TitleRegion based 4D tomographic image reconstruction: application to cardiac X-ray CT
Publication TypeConference Paper
Year of Publication2015
AuthorsVan Eyndhoven, G., K. J. Batenburg, and J. Sijbers
Conference NameIEEE International Conference on Image Processing
Pagination113 - 117
Abstract

X-ray computed tomography (CT) is a powerful tool for noninvasive cardiac imaging. However, radiation dose is a major issue. In this paper, we propose an iterative reconstruction method that reduces the radiation dose without compromising image quality. This is achieved by exploiting prior knowledge in two ways: the reconstructed object is assumed to consist of both stationary and dynamic regions over time and the dynamic region is assumed to have sparse structures after a proper sparsifying space-time transform. Experiments on simulation data and a real micro CT cardiac mouse dataset show that, with comparable image quality, the radiation dose can be substantially reduced compared to conventional acquisition/reconstruction protocols.

DOI10.1109/ICIP.2015.7350770
Research area: