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Reducing the number of X-ray projections to reconstruct CT images, which is also called sparse-projection reconstruction, can potentially avoid excessive dose delivered to patients in CT examination. To overcome the disadvantages of total variation (TV) minimization method, in this work we introduce a novel adaptive TpV regularization into sparse-projection image reconstruction and use FISTA technique to accelerate iterative convergence. The numerical experiments demonstrate that the proposed method suppresses noise and artifacts more efficiently, and preserves structure information better than other existing reconstruction methods.<\/jats:p>","DOI":"10.1155\/2015\/354869","type":"journal-article","created":{"date-parts":[[2015,5,18]],"date-time":"2015-05-18T21:43:13Z","timestamp":1431985393000},"page":"1-8","source":"Crossref","is-referenced-by-count":11,"title":["CT Image Reconstruction from Sparse Projections Using Adaptive TpV Regularization"],"prefix":"10.1155","volume":"2015","author":[{"ORCID":"http:\/\/orcid.org\/0000-0002-2764-0898","authenticated-orcid":true,"given":"Hongliang","family":"Qi","sequence":"first","affiliation":[{"name":"School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China"}]},{"given":"Zijia","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China"}]},{"given":"Linghong","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China"}]}],"member":"98","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMra072149"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1118\/1.2198169"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1088\/0031-9155\/52\/8\/015"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1118\/1.2775667"},{"issue":"3","key":"5","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1109\/TNS.1974.6499235","volume":"21","year":"1974","journal-title":"IEEE Transactions on Nuclear Science"},{"key":"6","doi-asserted-by":"publisher","DOI":"10.1007\/BF02458054"},{"key":"7","doi-asserted-by":"publisher","DOI":"10.1109\/42.20360"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.2006.871582"},{"issue":"2","key":"9","first-page":"119","volume":"14","year":"2006","journal-title":"Journal of X-Ray Science and Technology"},{"key":"10","doi-asserted-by":"publisher","DOI":"10.1088\/0031-9155\/53\/17\/021"},{"key":"11","doi-asserted-by":"publisher","DOI":"10.1088\/0031-9155\/56\/18\/011"},{"key":"12","doi-asserted-by":"publisher","DOI":"10.1088\/0031-9155\/57\/23\/7923"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1002\/ima.22058"},{"key":"14","doi-asserted-by":"publisher","DOI":"10.3233\/XST-130370"},{"key":"16","doi-asserted-by":"publisher","DOI":"10.1155\/2014\/862910"},{"key":"17","doi-asserted-by":"publisher","DOI":"10.1109\/TIP.2009.2028250"},{"key":"18","doi-asserted-by":"publisher","DOI":"10.1118\/1.595715"},{"issue":"1","key":"19","first-page":"89","volume":"6","year":"1998","journal-title":"Journal of Computing and Information Technology"},{"key":"21","doi-asserted-by":"publisher","DOI":"10.1364\/JOSAA.1.000612"},{"key":"22","doi-asserted-by":"publisher","DOI":"10.3233\/XST-2011-0299"},{"key":"23","doi-asserted-by":"publisher","DOI":"10.3233\/XST-2011-0283"},{"key":"24","doi-asserted-by":"publisher","DOI":"10.1088\/0031-9155\/56\/13\/004"},{"issue":"18","key":"25","first-page":"1359","volume":"56","year":"2011","journal-title":"Physics in Medicine and Biology"},{"key":"26","doi-asserted-by":"publisher","DOI":"10.1118\/1.3547724"},{"key":"27","doi-asserted-by":"publisher","DOI":"10.1118\/1.4766436"}],"container-title":["Computational and Mathematical Methods in Medicine"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/cmmm\/2015\/354869.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/cmmm\/2015\/354869.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/cmmm\/2015\/354869.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2017,6,23]],"date-time":"2017-06-23T11:52:18Z","timestamp":1498218738000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.hindawi.com\/journals\/cmmm\/2015\/354869\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015]]},"references-count":25,"alternative-id":["354869","354869"],"URL":"https:\/\/doi.org\/10.1155\/2015\/354869","relation":{},"ISSN":["1748-670X","1748-6718"],"issn-type":[{"value":"1748-670X","type":"print"},{"value":"1748-6718","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015]]}}}