{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T18:09:23Z","timestamp":1777486163179,"version":"3.51.4"},"reference-count":40,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2014,8,23]],"date-time":"2014-08-23T00:00:00Z","timestamp":1408752000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Magnetic Resonance Imaging"],"published-print":{"date-parts":[[2015,6]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>To investigate the impact of high\u2010bandwidth radiofrequency (RF) pulses used in turbo spin echo (TSE) sequences or combined with slice encoding for metal artifact correction (SEMAC) on artifact reduction at 3 Tesla in the knee in the presence of metal.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Local transmit\/receive coils feature increased maximum B<jats:sub>1<\/jats:sub> amplitude, reduced SAR exposition and thus enable the application of high\u2010bandwidth RF pulses. Susceptibility\u2010induced through\u2010plane distortion scales inversely with the RF bandwidth and the view angle, hence blurring, increases for higher RF bandwidths, when SEMAC is used. These effects were assessed for a phantom containing a total knee arthroplasty. TSE and SEMAC sequences with conventional and high RF bandwidths and different contrasts were tested on eight patients with different types of implants. To realize scan times of 7 to 9 min, SEMAC was always applied with eight slice\u2010encoding steps and distortion was rated by two radiologists.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A local transmit\/receive knee coil enables the use of an RF bandwidth of 4 kHz compared with 850 Hz in conventional sequences. Phantom scans confirm the relation of RF bandwidth and through\u2010plane distortion, which can be reduced up to 79%, and demonstrate the increased blurring for high\u2010bandwidth RF pulses. In average, artifacts in this RF mode are rated hardly visible for patients with joint arthroplasties, when eight SEMAC slice\u2010encoding steps are applied, and for patients with titanium fixtures, when TSE is used.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The application of high\u2010bandwidth RF pulses by local transmit coils substantially reduces through\u2010plane distortion artifacts at 3 Tesla. <jats:bold>J. Magn. Reson. Imaging 2015;41:1570\u20131580<\/jats:bold>. \u00a9 <jats:bold>2014 Wiley Periodicals, Inc<\/jats:bold>.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jmri.24729","type":"journal-article","created":{"date-parts":[[2014,8,23]],"date-time":"2014-08-23T10:04:49Z","timestamp":1408788289000},"page":"1570-1580","source":"Crossref","is-referenced-by-count":15,"title":["Knee implant imaging at 3 Tesla using high\u2010bandwidth radiofrequency pulses"],"prefix":"10.1002","volume":"41","author":[{"given":"Theresa J.","family":"Bachschmidt","sequence":"first","affiliation":[{"name":"Department of Experimental Physics 5 University of Wuerzburg Wuerzburg Germany"},{"name":"Magnetic Resonance Siemens AG Erlangen Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Reto","family":"Sutter","sequence":"additional","affiliation":[{"name":"Department of Radiology Orthopedic University Hospital Balgrist Zurich Switzerland"},{"name":"University of Zurich Faculty of Medicine Zurich Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter M.","family":"Jakob","sequence":"additional","affiliation":[{"name":"Department of Experimental Physics 5 University of Wuerzburg Wuerzburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christian W.A.","family":"Pfirrmann","sequence":"additional","affiliation":[{"name":"Department of Radiology Orthopedic University Hospital Balgrist Zurich Switzerland"},{"name":"University of Zurich Faculty of Medicine Zurich Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mathias","family":"Nittka","sequence":"additional","affiliation":[{"name":"Magnetic Resonance Siemens AG Erlangen Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2014,8,23]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.injury.2006.10.024"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.D.02441"},{"key":"e_1_2_5_4_1","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200704000-00012"},{"key":"e_1_2_5_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.22534"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00256-009-0683-0"},{"key":"e_1_2_5_7_1","doi-asserted-by":"publisher","DOI":"10.1053\/j.ro.2009.12.007"},{"key":"e_1_2_5_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.23629"},{"key":"e_1_2_5_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.20815"},{"key":"e_1_2_5_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0009-9260(97)80250-4"},{"key":"e_1_2_5_11_1","doi-asserted-by":"publisher","DOI":"10.1148\/rg.273065087"},{"key":"e_1_2_5_12_1","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-200301000-00021"},{"key":"e_1_2_5_13_1","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.13.10531"},{"key":"e_1_2_5_14_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-2006-934220"},{"key":"e_1_2_5_15_1","first-page":"345","article-title":"Reduction of metal artefacts in musculoskeletal MR imaging","volume":"90","author":"Vandevenne JE","year":"2007","journal-title":"JBR\u2010BTR"},{"key":"e_1_2_5_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0009-9260(02)00540-8"},{"key":"e_1_2_5_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.20375"},{"key":"e_1_2_5_18_1","doi-asserted-by":"publisher","DOI":"10.1002\/cmr.a.20143"},{"key":"e_1_2_5_19_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmri.1880060515"},{"key":"e_1_2_5_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0730-725X(99)00135-6"},{"key":"e_1_2_5_21_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.215.1.r00ap11254"},{"key":"e_1_2_5_22_1","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.08.1740"},{"key":"e_1_2_5_23_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.21967"},{"key":"e_1_2_5_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/mrm.21856"},{"key":"e_1_2_5_25_1","unstructured":"BosC denHarderCJ vanYperenG.MR Imaging near orthopedic implants with artifact reduction using view\u2010angle tilting and off\u2010resonance suppression. 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