{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,6]],"date-time":"2026-04-06T12:26:15Z","timestamp":1775478375397,"version":"3.50.1"},"reference-count":15,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2008,9,7]],"date-time":"2008-09-07T00:00:00Z","timestamp":1220745600000},"content-version":"vor","delay-in-days":250,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Biomedical Imaging"],"published-print":{"date-parts":[[2008,1]]},"abstract":"<jats:p>The finite sampling of <jats:italic>k<\/jats:italic>\u2010space in MRI causes spurious image artifacts, known as Gibbs ringing, which result from signal truncation at the border of <jats:italic>k<\/jats:italic>\u2010space. The effect is especially visible for acquisitions at low resolution and commonly reduced by filtering at the expense of image blurring. The present work demonstrates that the simple assumption of a piecewise\u2010constant object can be exploited to extrapolate the data in <jats:italic>k<\/jats:italic>\u2010space beyond the measured part. The method allows for a significant reduction of truncation artifacts without compromising resolution. The assumption translates into a total variation minimization problem, which can be solved with a nonlinear optimization algorithm. In the presence of substantial noise, a modified approach offers edge\u2010preserving denoising by allowing for slight deviations from the measured data in addition to supplementing data. The effectiveness of these methods is demonstrated with simulations as well as experimental data for a phantom and human brain in vivo.<\/jats:p>","DOI":"10.1155\/2008\/184123","type":"journal-article","created":{"date-parts":[[2008,9,9]],"date-time":"2008-09-09T13:38:37Z","timestamp":1220967517000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":63,"title":["Suppression of MRI Truncation Artifacts Using  Total Variation Constrained Data Extrapolation"],"prefix":"10.1155","volume":"2008","author":[{"given":"Kai Tobias","family":"Block","sequence":"first","affiliation":[]},{"given":"Martin","family":"Uecker","sequence":"additional","affiliation":[]},{"given":"Jens","family":"Frahm","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2008,9,7]]},"reference":[{"key":"e_1_2_7_1_2","series-title":"IEEE Press Series on Biomedical Engineering","volume-title":"Principles of Magnetic Resonance Imaging","author":"Liang Z.-P.","year":"2000"},{"key":"e_1_2_7_2_2","first-page":"67","article-title":"Constrained reconstruction methods in MR imaging","volume":"4","author":"Liang Z.-P.","year":"1992","journal-title":"Reviews of Magnetic Resonance in Medicine"},{"key":"e_1_2_7_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/0730-725X(90)90251-V"},{"key":"e_1_2_7_4_2","doi-asserted-by":"publisher","DOI":"10.1109\/TMI.2002.1000255"},{"key":"e_1_2_7_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.20720"},{"key":"e_1_2_7_6_2","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.1910170115"},{"key":"e_1_2_7_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.1880010309"},{"key":"e_1_2_7_8_2","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.1880010619"},{"key":"e_1_2_7_9_2","doi-asserted-by":"publisher","DOI":"10.1109\/42.963820"},{"key":"e_1_2_7_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/0167-2789(92)90242-F"},{"key":"e_1_2_7_11_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.2006.871582"},{"key":"e_1_2_7_12_2","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.21236"},{"key":"e_1_2_7_13_2","doi-asserted-by":"publisher","DOI":"10.1080\/17486700701839039"},{"key":"e_1_2_7_14_2","doi-asserted-by":"publisher","DOI":"10.1137\/030601880"},{"key":"e_1_2_7_15_2","doi-asserted-by":"publisher","DOI":"10.1109\/83.392335"}],"container-title":["International Journal of Biomedical Imaging"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/ijbi\/2008\/184123.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/ijbi\/2008\/184123.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1155\/2008\/184123","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,6,28]],"date-time":"2024-06-28T13:15:07Z","timestamp":1719580507000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1155\/2008\/184123"}},"subtitle":[],"editor":[{"given":"David","family":"Wilson","sequence":"additional","affiliation":[]}],"short-title":[],"issued":{"date-parts":[[2008,1]]},"references-count":15,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2008,1]]}},"alternative-id":["10.1155\/2008\/184123"],"URL":"https:\/\/doi.org\/10.1155\/2008\/184123","archive":["Portico"],"relation":{},"ISSN":["1687-4188","1687-4196"],"issn-type":[{"value":"1687-4188","type":"print"},{"value":"1687-4196","type":"electronic"}],"subject":[],"published":{"date-parts":[[2008,1]]},"assertion":[{"value":"2008-01-08","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2008-08-05","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2008-09-07","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"184123"}}