Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 신태훈 | * |
dc.date.accessioned | 2019-11-19T16:30:56Z | - |
dc.date.available | 2019-11-19T16:30:56Z | - |
dc.date.issued | 2015 | * |
dc.identifier.issn | 0740-3194 | * |
dc.identifier.issn | 1522-2594 | * |
dc.identifier.other | OAK-25830 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/252038 | - |
dc.description.abstract | Purpose: To develop a magnetization preparation sequence for simultaneous outer volume suppression (OVS) and T-2 weighting in whole-heart coronary magnetic resonance angiography. Methods: A combined OVS and T-2 preparation sequence (OVS-T-2 Prep) was designed with a nonselective adiabatic 90 degrees tipdown pulse, two adiabatic 180 degrees refocusing pulses, and a 2D spiral -90 degrees tipup pulse. The OVS-T-2 Prep preserves the magnetization inside an elliptic cylinder with T-2 weighting, while saturating the magnetization outside the cylinder. Its performance was tested on phantoms and on 13 normal subjects with coronary magnetic resonance angiography using 3D cones trajectories. Results: Phantom studies showed expected T-2-dependent signal amplitude in the spatial passband and suppressed signal in the spatial stopband. In vivo studies with full-field-of-view cones yielded a passband-to-stopband signal ratio of 3.18 +/- 0.77 and blood-myocardium contrast-to-noise ratio enhancement by a factor of 1.43 +/- 0.20 (P < 0.001). In vivo studies with reduced-field-of-view cones showed that OVS-T-2 Prep well suppressed the aliasing artifacts, as supported by significantly reduced signal in the regions with no tissues compared to the images acquired without preparation (P < 0.0001). Conclusion: OVS-T-2 Prep is a compact sequence that can accelerate coronary magnetic resonance angiography by suppressing signals from tissues surrounding the heart while simultaneously enhancing the blood-myocardium contrast. (C) 2014 Wiley Periodicals, Inc. | * |
dc.language | English | * |
dc.publisher | WILEY-BLACKWELL | * |
dc.subject | outer volume suppression | * |
dc.subject | T-2 Prep | * |
dc.subject | cones imaging | * |
dc.subject | radiofrequency pulse design | * |
dc.subject | coronary MR angiography | * |
dc.title | Combined Outer Volume Suppression and T-2 Preparation Sequence for Coronary Angiography | * |
dc.type | Article | * |
dc.relation.issue | 6 | * |
dc.relation.volume | 74 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 1632 | * |
dc.relation.lastpage | 1639 | * |
dc.relation.journaltitle | MAGNETIC RESONANCE IN MEDICINE | * |
dc.identifier.doi | 10.1002/mrm.25575 | * |
dc.identifier.wosid | WOS:000367737300014 | * |
dc.author.google | Luo, Jieying | * |
dc.author.google | Addy, Nii Okai | * |
dc.author.google | Ingle, R. Reeve | * |
dc.author.google | Hargreaves, Brian A. | * |
dc.author.google | Hu, Bob S. | * |
dc.author.google | Nishimura, Dwight G. | * |
dc.author.google | Shin, Taehoon | * |
dc.contributor.scopusid | 신태훈(15061749900) | * |
dc.date.modifydate | 20240322132527 | * |