Single-shot pseudo-centric EPI for magnetization-prepared imaging

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dc.contributor.authorLee, Hyun-Sooko
dc.contributor.authorHwang, Seon-Hako
dc.contributor.authorPark, Jaeseokko
dc.contributor.authorPark, Sung-Hongko
dc.date.accessioned2021-12-01T06:40:28Z-
dc.date.available2021-12-01T06:40:28Z-
dc.date.created2021-07-02-
dc.date.created2021-07-02-
dc.date.issued2021-11-
dc.identifier.citationMAGNETIC RESONANCE IN MEDICINE, v.86, no.5, pp.2656 - 2665-
dc.identifier.issn0740-3194-
dc.identifier.urihttp://hdl.handle.net/10203/289759-
dc.description.abstractPurpose: To implement a single-shot centric-reordered EPI (1sh-CenEPI), which reduces TE significantly, thus enabling to improve SNR for magnetization-prepared imaging. Methods: We proposed a 1sh-CenEPI in which grouped oscillating readout gradients, phase-encoding blips within each group, and big phase-encoding jumps between two consecutive groups are incorporated to encode whole k-space from the center to the edges in a single shot. The concept was tested on phantoms and human brains at 3 T. In addition, the proposed reordering scheme was applied to pseudo-continuous arterial spin labeling for evaluating the efficiency of the centric reordering in magnetization-prepared imaging. Results: The proposed 1sh-CenEPI reduced TE from 50 ms to 1.4 ms for gradient-echo EPI, and from 100 ms to 7 ms for spin-echo EPI, while the elongation of readout duration was below 10% of the whole readout duration in most cases. The 1sh-CenEPI images exhibited no distinct geometric distortion both in phantom and human brain, comparable to the conventional two-shot center-out EPI. In pseudo-continuous arterial spin labeling results, 3-fold temporal SNR increase and 2-fold spatial SNR increase in the perfusion-weighted images were achieved with 1sh-CenEPI compared with the conventional linear ordering, whereas the cerebral blood flow values were consistent with previous studies. Conclusion: The proposed 1sh-CenEPI significantly reduced TE while maintaining similar readout window and providing images comparable to the conventional linear and multishot center-out EPI images. It can be a qualified candidate as a new readout for various magnetization-prepared imaging techniques.-
dc.languageEnglish-
dc.publisherWILEY-
dc.titleSingle-shot pseudo-centric EPI for magnetization-prepared imaging-
dc.typeArticle-
dc.identifier.wosid000667522900001-
dc.identifier.scopusid2-s2.0-85111157140-
dc.type.rimsART-
dc.citation.volume86-
dc.citation.issue5-
dc.citation.beginningpage2656-
dc.citation.endingpage2665-
dc.citation.publicationnameMAGNETIC RESONANCE IN MEDICINE-
dc.identifier.doi10.1002/mrm.28897-
dc.contributor.localauthorPark, Sung-Hong-
dc.contributor.nonIdAuthorPark, Jaeseok-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorcentric reordering-
dc.subject.keywordAuthorecho planar imaging-
dc.subject.keywordAuthormagnetization-prepared imaging-
dc.subject.keywordAuthorpCASL-
dc.subject.keywordAuthorphase encoding order-
dc.subject.keywordPlusDISTORTION-
dc.subject.keywordPlusRECONSTRUCTION-
dc.subject.keywordPlusACQUISITION-
dc.subject.keywordPlusPERFUSION-
dc.subject.keywordPlusIMAGES-
dc.subject.keywordPlusFLOW-
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