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Article: A single-shot T2 mapping protocol based on echo-split gradient-spin-echo acquisition and parametric multiplexed sensitivity encoding based on projection onto convex sets reconstruction

TitleA single-shot T2 mapping protocol based on echo-split gradient-spin-echo acquisition and parametric multiplexed sensitivity encoding based on projection onto convex sets reconstruction
Authors
Keywordsecho-split GRASE
extended phase graph analysis
GRASE
parametric-POCSMUSE
T2 mapping
Issue Date2018
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0740-3194/
Citation
Magnetic Resonance in Medicine, 2018, v. 79 n. 1, p. 383-393 How to Cite?
AbstractPurpose: To develop a high-speed T2 mapping protocol that is capable of accurately measuring T2 relaxation time constants from a single-shot acquisition. Theory: A new echo-split single-shot gradient-spin-echo (GRASE) pulse sequence is developed to acquire multicontrast data while suppressing signals from most nonprimary echo pathways in Carr-Purcell-Meiboom-Gill (CPMG) echoes. Residual nonprimary pathway signals are taken into consideration when performing T2 mapping using a parametric multiplexed sensitivity encoding based on projection onto convex sets (parametric-POCSMUSE) reconstruction method that incorporates extended phase graph modeling of GRASE signals. Methods: The single-shot echo-split GRASE-based T2 mapping procedure was evaluated in human studies at 3 Tesla. The acquired data were compared with reference data obtained with a more time-consuming interleaved spin-echo echo planar imaging protocol. T2 maps derived from conventional single-shot GRASE scans, in which nonprimary echo pathways were not appropriately addressed, were also evaluated. Results: Using the developed single-shot T2 mapping protocol, quantitatively accurate T2 maps can be obtained with a short scan time (<0.2 seconds per slice). Conclusion: Accurate T2 mapping with minimal signal contamination from CPMG high-order echo pathways can be achieved by the developed method that integrates single-shot echo-split GRASE acquisition and parametric-POCSMUSE reconstruction. Magn Reson Med 79:383–393, 2018. © 2017 International Society for Magnetic Resonance in Medicine. © 2017 International Society for Magnetic Resonance in Medicine
Persistent Identifierhttp://hdl.handle.net/10722/244387
ISSN
2017 Impact Factor: 4.082
2015 SCImago Journal Rankings: 2.197
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChu, ML-
dc.contributor.authorChang, HCC-
dc.contributor.authorOshio, K-
dc.contributor.authorChen, NK-
dc.date.accessioned2017-09-18T01:51:30Z-
dc.date.available2017-09-18T01:51:30Z-
dc.date.issued2018-
dc.identifier.citationMagnetic Resonance in Medicine, 2018, v. 79 n. 1, p. 383-393-
dc.identifier.issn0740-3194-
dc.identifier.urihttp://hdl.handle.net/10722/244387-
dc.description.abstractPurpose: To develop a high-speed T2 mapping protocol that is capable of accurately measuring T2 relaxation time constants from a single-shot acquisition. Theory: A new echo-split single-shot gradient-spin-echo (GRASE) pulse sequence is developed to acquire multicontrast data while suppressing signals from most nonprimary echo pathways in Carr-Purcell-Meiboom-Gill (CPMG) echoes. Residual nonprimary pathway signals are taken into consideration when performing T2 mapping using a parametric multiplexed sensitivity encoding based on projection onto convex sets (parametric-POCSMUSE) reconstruction method that incorporates extended phase graph modeling of GRASE signals. Methods: The single-shot echo-split GRASE-based T2 mapping procedure was evaluated in human studies at 3 Tesla. The acquired data were compared with reference data obtained with a more time-consuming interleaved spin-echo echo planar imaging protocol. T2 maps derived from conventional single-shot GRASE scans, in which nonprimary echo pathways were not appropriately addressed, were also evaluated. Results: Using the developed single-shot T2 mapping protocol, quantitatively accurate T2 maps can be obtained with a short scan time (<0.2 seconds per slice). Conclusion: Accurate T2 mapping with minimal signal contamination from CPMG high-order echo pathways can be achieved by the developed method that integrates single-shot echo-split GRASE acquisition and parametric-POCSMUSE reconstruction. Magn Reson Med 79:383–393, 2018. © 2017 International Society for Magnetic Resonance in Medicine. © 2017 International Society for Magnetic Resonance in Medicine-
dc.languageeng-
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0740-3194/-
dc.relation.ispartofMagnetic Resonance in Medicine-
dc.subjectecho-split GRASE-
dc.subjectextended phase graph analysis-
dc.subjectGRASE-
dc.subjectparametric-POCSMUSE-
dc.subjectT2 mapping-
dc.titleA single-shot T2 mapping protocol based on echo-split gradient-spin-echo acquisition and parametric multiplexed sensitivity encoding based on projection onto convex sets reconstruction-
dc.typeArticle-
dc.identifier.emailChang, HCC: hcchang@hku.hk-
dc.identifier.authorityChang, HCC=rp02024-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/mrm.26696-
dc.identifier.pmid28480603-
dc.identifier.scopuseid_2-s2.0-85019015117-
dc.identifier.hkuros277074-
dc.identifier.volume79-
dc.identifier.issue1-
dc.identifier.spage383-
dc.identifier.epage393-
dc.identifier.isiWOS:000417926300036-
dc.publisher.placeUnited States-

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