DC Field | Value | Language |
---|---|---|
dc.contributor.author | Do, Won-Joon | ko |
dc.contributor.author | Kim, Ki Hwan | ko |
dc.contributor.author | Choi, Seung Hong | ko |
dc.contributor.author | Park, Sung-Hong | ko |
dc.date.accessioned | 2017-01-18T02:49:47Z | - |
dc.date.available | 2017-01-18T02:49:47Z | - |
dc.date.created | 2015-10-15 | - |
dc.date.created | 2015-10-15 | - |
dc.date.created | 2015-10-15 | - |
dc.date.issued | 2016-11 | - |
dc.identifier.citation | MAGNETIC RESONANCE IN MEDICINE, v.76, no.5, pp.1504 - 1511 | - |
dc.identifier.issn | 0740-3194 | - |
dc.identifier.uri | http://hdl.handle.net/10203/219654 | - |
dc.description.abstract | Purpose: To develop a new artifact-suppressed optimal three-dimensional (3D) T-1-and T-2*-weighted dual-echo imaging. Methods: We optimized flip angles for 3D T-1-and T-2*-weighted imaging by conventional dual-echo in vivo experiments and computer simulations, and then implemented a dual-echo sequence with an echo-specific k-space reordering scheme to satisfy the optimal flip angles for both T-1 and T-2* contrast. We also proposed two strategies to suppress ringing artifacts induced by the abrupt flip angle jumps in the proposed dual echo sequence: (i) implementing smooth transition regions and (ii) discarding the k-space regions of the abrupt flip angle jumps as dummy phase-encoding steps. Results: The optimal flip angles measured from experiments were different between T-1-and T-2*-weighted contrast, in agreement with simulations. The echo-specific k-space reordered dual-echo sequence showed optimal T-1 and T-2* contrast simultaneously, but also showed ringing artifacts because of high flip-angle changes between k-space regions. The two proposed strategies effectively suppressed the ringing artifacts. Conclusion: The proposed 3D dual-echo sequence provided optimal T-1 and T-2* contrast simultaneously with no artifacts and thus is potentially applicable to routine clinical applications for simultaneous high resolution T-1- and T-2*-weighted imaging. (C) 2015 International Society for Magnetic Resonance in Medicine | - |
dc.language | English | - |
dc.publisher | WILEY-BLACKWELL | - |
dc.subject | MAGNETIC-RESONANCE | - |
dc.subject | SIMULTANEOUS ACQUISITION | - |
dc.subject | ARTERIOVENOGRAPHY CODEA | - |
dc.subject | MR-ANGIOGRAPHY | - |
dc.subject | IRON OVERLOAD | - |
dc.subject | IN-PHASE | - |
dc.subject | BRAIN | - |
dc.subject | SEQUENCE | - |
dc.subject | IMAGES | - |
dc.subject | VENOGRAPHY | - |
dc.title | Artifact-Suppressed Optimal Three-Dimensional T-1- and T-2*-Weighted Dual-Echo Imaging | - |
dc.type | Article | - |
dc.identifier.wosid | 000389127100016 | - |
dc.identifier.scopusid | 2-s2.0-84949008365 | - |
dc.type.rims | ART | - |
dc.citation.volume | 76 | - |
dc.citation.issue | 5 | - |
dc.citation.beginningpage | 1504 | - |
dc.citation.endingpage | 1511 | - |
dc.citation.publicationname | MAGNETIC RESONANCE IN MEDICINE | - |
dc.identifier.doi | 10.1002/mrm.26033 | - |
dc.contributor.localauthor | Park, Sung-Hong | - |
dc.contributor.nonIdAuthor | Choi, Seung Hong | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | T1 | - |
dc.subject.keywordAuthor | T2* | - |
dc.subject.keywordAuthor | dual echo sequence | - |
dc.subject.keywordAuthor | echo-specific k-space reordering | - |
dc.subject.keywordAuthor | CODEA | - |
dc.subject.keywordPlus | MAGNETIC-RESONANCE | - |
dc.subject.keywordPlus | SIMULTANEOUS ACQUISITION | - |
dc.subject.keywordPlus | ARTERIOVENOGRAPHY CODEA | - |
dc.subject.keywordPlus | MR-ANGIOGRAPHY | - |
dc.subject.keywordPlus | IRON OVERLOAD | - |
dc.subject.keywordPlus | IN-PHASE | - |
dc.subject.keywordPlus | BRAIN | - |
dc.subject.keywordPlus | SEQUENCE | - |
dc.subject.keywordPlus | IMAGES | - |
dc.subject.keywordPlus | VENOGRAPHY | - |
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