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Title
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Region based 4d tomographic image reconstruction : application to cardiac x-ray ct
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Author
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Abstract
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| X-ray computed tomography (CT) is a powerful tool for non-invasive 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 mu CT cardiac mouse dataset show that, with comparable image quality, the radiation dose can be substantially reduced compared to conventional acquisition/reconstruction protocols. |
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Language
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English
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Source (journal)
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Proceedings. - Los Alamitos, Calif, 1994, currens
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Source (book)
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IEEE International Conference on Image Processing (ICIP), SEP 27-30, 2015, Quebec City, CANADA
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Publication
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New york
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Ieee
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2015
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ISBN
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978-1-4799-8339-1
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978-1-4799-8339-1
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DOI
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10.1109/ICIP.2015.7350770
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Volume/pages
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(2015)
, p. 113-117
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ISI
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000371977800025
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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