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Accelerated 3D multi‐echo spin‐echo sequence with a subspace constrained reconstruction for whole mouse brain T2 mapping

dc.rights.licenseopenen_US
hal.structure.identifierCentre de résonance magnétique des systèmes biologiques [CRMSB]
dc.contributor.authorTROTIER, Aurélien
hal.structure.identifierCentre de résonance magnétique des systèmes biologiques [CRMSB]
dc.contributor.authorCORBIN, Nadège
hal.structure.identifierCentre de résonance magnétique des systèmes biologiques [CRMSB]
dc.contributor.authorMIRAUX, Sylvain
IDREF: 150967047
hal.structure.identifierCentre de résonance magnétique des systèmes biologiques [CRMSB]
dc.contributor.authorRIBOT, Emeline
dc.date.accessioned2024-11-14T14:23:07Z
dc.date.available2024-11-14T14:23:07Z
dc.date.issued2024-05-09
dc.identifier.issn0740-3194en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/203282
dc.description.abstractEnAbstract Purpose To accelerate whole‐brain quantitative mapping in preclinical imaging setting. Methods A three‐dimensional (3D) multi‐echo spin echo sequence was highly undersampled with a variable density Poisson distribution to reduce the acquisition time. Advanced iterative reconstruction based on linear subspace constraints was employed to recover high‐quality raw images. Different subspaces, generated using exponential or extended‐phase graph (EPG) simulations or from low‐resolution calibration images, were compared. The subspace dimension was investigated in terms of precision. The method was validated on a phantom containing a wide range of and was then applied to monitor metastasis growth in the mouse brain at 4.7T. Image quality and estimation were assessed for 3 acceleration factors (6/8/10). Results The EPG‐based dictionary gave robust estimations of a large range of . A subspace dimension of 6 was the best compromise between precision and image quality. Combining the subspace constrained reconstruction with a highly undersampled dataset enabled the acquisition of whole‐brain maps, the detection and the monitoring of metastasis growth of less than 500 . Conclusion Subspace‐based reconstruction is suitable for 3D mapping. This method can be used to reach an acceleration factor up to 8, corresponding to an acquisition time of 25 min for an isotropic 3D acquisition of 156 m on the mouse brain, used here for monitoring metastases growth.
dc.language.isoENen_US
dc.title.enAccelerated 3D multi‐echo spin‐echo sequence with a subspace constrained reconstruction for whole mouse brain T2 mapping
dc.typeArticle de revueen_US
dc.identifier.doi10.1002/mrm.30146en_US
dc.subject.halSciences du Vivant [q-bio]en_US
bordeaux.journalMagnetic Resonance in Medicineen_US
bordeaux.page1525-1539en_US
bordeaux.volume92en_US
bordeaux.hal.laboratoriesCentre de Résonance Magnétique des Systèmes Biologiques (CRMSB) - UMR 5536en_US
bordeaux.issue4en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-04766016
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Magnetic%20Resonance%20in%20Medicine&rft.date=2024-05-09&rft.volume=92&rft.issue=4&rft.spage=1525-1539&rft.epage=1525-1539&rft.eissn=0740-3194&rft.issn=0740-3194&rft.au=TROTIER,%20Aur%C3%A9lien&CORBIN,%20Nad%C3%A8ge&MIRAUX,%20Sylvain&RIBOT,%20Emeline&rft.genre=article


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