Shearlet-based regularized reconstruction in region-of-interest computed tomography
نویسندگان
چکیده
منابع مشابه
Shearlet-based regularized reconstruction in region-of-interest computed tomography
Region of interest (ROI) tomography has gained increasing attention in recent years due to its potential to reducing radiation exposure and shortening the scanning time. However, tomographic reconstruction from ROI-focused illumination involves truncated projection data and typically results in higher numerical instability even when the reconstruction problem has unique solution. To address thi...
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Interior tomography for the region-of-interest imaging has advantages of using a small detector and reducing X-ray radiation dose. However, standard analytic reconstruction suffers from severe cupping artifacts due to existence of null space in the truncated Radon transform. Existing penalized reconstruction methods may address this problem but they require extensive computations due to the ite...
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ژورنال
عنوان ژورنال: Mathematical Modelling of Natural Phenomena
سال: 2018
ISSN: 0973-5348,1760-6101
DOI: 10.1051/mmnp/2018014