Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 신태훈 | * |
dc.date.accessioned | 2019-11-19T16:30:43Z | - |
dc.date.available | 2019-11-19T16:30:43Z | - |
dc.date.issued | 2016 | * |
dc.identifier.issn | 0730-725X | * |
dc.identifier.issn | 1873-5894 | * |
dc.identifier.other | OAK-25889 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/251980 | - |
dc.description.abstract | Purpose: While MP2RAGE shows the potential to generate B-1 insensitive T-1 contrast, the long TR of MP2RAGE (>= 6 s at 7 T) is essential to provide the large dynamic range of apparent T-1 relaxation for dual inversion time acquisitions. We present a 2 direction (2D) accelerated MP2RAGE, which provides an increased flip angle while maintaining similar dynamic recovery as 1D accelerated MP2RAGE. Method: Simulations were conducted to optimize 2D accelerated MP2RAGE parameters and healthy subjects were scanned with 1D and 2D accelerated MP2RAGE at 7 T. Images were compared visually and contrast to noise (CNR) between brain tissues was measured. Result: Simulations showed that CNR is primarly determined by the TR, followed by the number of the first partition encoding steps in MP2RAGE. Keeping TR constant, a smaller number of partition encoding steps increases the achievable maximal CNR. In-vivo 2D MP2RAGE improves CNR between white and gray matters by 9% when compared to 1D accelerated MP2RAGE with identical voxel size. Conclusion: We presented 2D accelated MP2RAGE at 7 T with the increased flip angle. We show that this leads to CNR improvement, and consequently a reduction of scan time to be compared to 1D accelerated MP2RAGE. (C) 2016 Elsevier Inc. All rights reserved. | * |
dc.language | English | * |
dc.publisher | ELSEVIER SCIENCE INC | * |
dc.subject | MP2RAGE | * |
dc.subject | MPRAGE | * |
dc.subject | 2D acceleration | * |
dc.subject | SPIRiT | * |
dc.subject | ultra-high filed | * |
dc.subject | 7 T | * |
dc.title | CNR improvement of MP2RAGE from slice encoding directional acceleration | * |
dc.type | Article | * |
dc.relation.issue | 6 | * |
dc.relation.volume | 34 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 779 | * |
dc.relation.lastpage | 784 | * |
dc.relation.journaltitle | MAGNETIC RESONANCE IMAGING | * |
dc.identifier.doi | 10.1016/j.mri.2016.03.014 | * |
dc.identifier.wosid | WOS:000377640500009 | * |
dc.author.google | Shin, Wanyong | * |
dc.author.google | Shin, Taehoon | * |
dc.author.google | Oh, Se-Hong | * |
dc.author.google | Lowe, Mark J. | * |
dc.contributor.scopusid | 신태훈(15061749900) | * |
dc.date.modifydate | 20240322132527 | * |