Rapid hybrid encoding for high-resolution whole-brain fluid-attenuated imaging
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Hoonjae | - |
dc.contributor.author | Sohn, Chul-Ho | - |
dc.contributor.author | Park, Jaeseok | - |
dc.date.accessioned | 2021-09-05T18:32:52Z | - |
dc.date.available | 2021-09-05T18:32:52Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2013-12 | - |
dc.identifier.issn | 0952-3480 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/101514 | - |
dc.description.abstract | Single-slab three-dimensional (3D) turbo spin-echo (TSE) imaging combined with inversion recovery (IR), which employs short, spatially non-selective refocusing pulses and signal prescription based variable refocusing flip angles (VFA) to increase imaging efficiency, was recently introduced to produce fluid-attenuated brain images for lesion detection. Despite the advantages, the imaging efficiency in this approach still remains limited because a substantially long time of inversion is needed to selectively suppress the signal intensity of cerebrospinal fluid (CSF) while fully recovering that of brain tissues. The purpose of this work is to develop a novel, rapid hybrid encoding method for highly efficient whole-brain fluid-attenuated imaging. In each time of repetition, volumetric data are continuously encoded using the hybrid modular acquisition in a sequential fashion even during IR signal transition, wherein reversed fast imaging with steady-state free precession (PSIF) is employed to encode intermediate-to-high spatial frequency signals prior to CSF nulling, while VFA-TSE is used to collect low-to-intermediate spatial frequency signals afterwards. Gradient-induced spin de-phasing between a pair of neighboring radio-frequency (RF) pulses in both PSIF and TSE modules is kept identical to avoid the occurrence of multiple echoes in a single acquisition window. Additionally, a two-step, alternate RF phase-cycling scheme is employed in the low spatial frequency region to eliminate free induction decay induced edge artifacts. Numerical simulations of the Bloch equations were performed to evaluate signal evolution of brain tissues along the echo train while optimizing imaging parameters. In vivo studies demonstrate that the proposed technique produces high-resolution isotropic fluid-attenuated whole-brain images in a clinically acceptable imaging time with substantially high signal-to-noise ratio for white matter while retaining lesion conspicuity. Copyright (c) 2013 John Wiley & Sons, Ltd. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | WILEY-BLACKWELL | - |
dc.subject | STATE FREE PRECESSION | - |
dc.subject | MAGNETIZATION-TRANSFER RATIO | - |
dc.subject | INVERSION-RECOVERY TRUEFISP | - |
dc.subject | FLAIR PULSE SEQUENCES | - |
dc.subject | LONG ECHO TRAINS | - |
dc.subject | STEADY-STATE | - |
dc.subject | MULTIPLE-SCLEROSIS | - |
dc.subject | RELAXATION-TIME | - |
dc.subject | GRADIENT-ECHO | - |
dc.subject | SPIN | - |
dc.title | Rapid hybrid encoding for high-resolution whole-brain fluid-attenuated imaging | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Jaeseok | - |
dc.identifier.doi | 10.1002/nbm.3013 | - |
dc.identifier.scopusid | 2-s2.0-84888028770 | - |
dc.identifier.wosid | 000327157400015 | - |
dc.identifier.bibliographicCitation | NMR IN BIOMEDICINE, v.26, no.12, pp.1751 - 1761 | - |
dc.relation.isPartOf | NMR IN BIOMEDICINE | - |
dc.citation.title | NMR IN BIOMEDICINE | - |
dc.citation.volume | 26 | - |
dc.citation.number | 12 | - |
dc.citation.startPage | 1751 | - |
dc.citation.endPage | 1761 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Biophysics | - |
dc.relation.journalResearchArea | Radiology, Nuclear Medicine & Medical Imaging | - |
dc.relation.journalResearchArea | Spectroscopy | - |
dc.relation.journalWebOfScienceCategory | Biophysics | - |
dc.relation.journalWebOfScienceCategory | Radiology, Nuclear Medicine & Medical Imaging | - |
dc.relation.journalWebOfScienceCategory | Spectroscopy | - |
dc.subject.keywordPlus | STEADY-STATE | - |
dc.subject.keywordPlus | MULTIPLE-SCLEROSIS | - |
dc.subject.keywordPlus | RELAXATION-TIME | - |
dc.subject.keywordPlus | GRADIENT-ECHO | - |
dc.subject.keywordPlus | SPIN | - |
dc.subject.keywordPlus | STATE FREE PRECESSION | - |
dc.subject.keywordPlus | MAGNETIZATION-TRANSFER RATIO | - |
dc.subject.keywordPlus | INVERSION-RECOVERY TRUEFISP | - |
dc.subject.keywordPlus | FLAIR PULSE SEQUENCES | - |
dc.subject.keywordPlus | LONG ECHO TRAINS | - |
dc.subject.keywordAuthor | magnetic resonance imaging | - |
dc.subject.keywordAuthor | hybrid encoding | - |
dc.subject.keywordAuthor | turbo spin-echo | - |
dc.subject.keywordAuthor | gradient echo | - |
dc.subject.keywordAuthor | fluid attenuated | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.