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dc.rights.licenseopenen_US
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorBUSTIN, Aurelien
dc.contributor.authorTOUPIN, Solenn
dc.contributor.authorSRIDI, Soumaya
dc.contributor.authorYERLY, Jerome
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorBERNUS, Olivier
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorLABROUSSE, Louis
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorQUESSON, Bruno
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorROGIER, Julien
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorHAISSAGUERRE, Michel
dc.contributor.authorVAN HEESWIJK, Ruud
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorJAIS, Pierre
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorCOCHET, Hubert
hal.structure.identifierCentre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] [CRCTB]
dc.contributor.authorSTUBER, Matthias
dc.date.accessioned2022-10-11T16:40:09Z
dc.date.available2022-10-11T16:40:09Z
dc.date.issued2021-10-21
dc.identifier.issn1532-429Xen_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/148385
dc.description.abstractEnBackground : Cardiovascular magnetic resonance T1ρ mapping may detect myocardial injuries without exogenous contrast agent. However, multiple co-registered acquisitions are required, and the lack of robust motion correction limits its clinical translation. We introduce a single breath-hold myocardial T1ρ mapping method that includes model-based non-rigid motion correction. Methods : A single-shot electrocardiogram (ECG)-triggered balanced steady state free precession (bSSFP) 2D adiabatic T1ρ mapping sequence that collects five T1ρ-weighted (T1ρw) images with different spin lock times within a single breath-hold is proposed. To address the problem of residual respiratory motion, a unified optimization framework consisting of a joint T1ρ fitting and model-based non-rigid motion correction algorithm, insensitive to contrast change, was implemented inline for fast (~ 30 s) and direct visualization of T1ρ maps. The proposed reconstruction was optimized on an ex vivo human heart placed on a motion-controlled platform. The technique was then tested in 8 healthy subjects and validated in 30 patients with suspected myocardial injury on a 1.5T CMR scanner. The Dice similarity coefficient (DSC) and maximum perpendicular distance (MPD) were used to quantify motion and evaluate motion correction. The quality of T1ρ maps was scored. In patients, T1ρ mapping was compared to cine imaging, T2 mapping and conventional post-contrast 2D late gadolinium enhancement (LGE). T1ρ values were assessed in remote and injured areas, using LGE as reference. Results : Despite breath holds, respiratory motion throughout T1ρw images was much larger in patients than in healthy subjects (5.1 ± 2.7 mm vs. 0.5 ± 0.4 mm, P < 0.01). In patients, the model-based non-rigid motion correction improved the alignment of T1ρw images, with higher DSC (87.7 ± 5.3% vs. 82.2 ± 7.5%, P < 0.01), and lower MPD (3.5 ± 1.9 mm vs. 5.1 ± 2.7 mm, P < 0.01). This resulted in significantly improved quality of the T1ρ maps (3.6 ± 0.6 vs. 2.1 ± 0.9, P < 0.01). Using this approach, T1ρ mapping could be used to identify LGE in patients with 93% sensitivity and 89% specificity. T1ρ values in injured (LGE positive) areas were significantly higher than in the remote myocardium (68.4 ± 7.9 ms vs. 48.8 ± 6.5 ms, P < 0.01). Conclusions : The proposed motion-corrected T1ρ mapping framework enables a quantitative characterization of myocardial injuries with relatively low sensitivity to respiratory motion. This technique may be a robust and contrast-free adjunct to LGE for gaining new insight into myocardial structural disorders.
dc.description.sponsorshipPlateforme multi-modale d'exploration en cardiologieen_US
dc.description.sponsorshipL'Institut de Rythmologie et modélisation Cardiaque - ANR-10-IAHU-0004en_US
dc.language.isoENen_US
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.subject.enModel-based
dc.subject.enMotion correction
dc.subject.enMyocardial
dc.subject.enNon-rigid
dc.subject.enParameter mapping
dc.subject.enT1ρ mapping
dc.title.enEndogenous assessment of myocardial injury with single-shot model-based non-rigid motion-corrected T1 rho mapping
dc.typeArticle de revueen_US
dc.identifier.doi10.1186/s12968-021-00781-wen_US
dc.subject.halSciences de l'ingénieur [physics]en_US
dc.identifier.pubmed34670572en_US
dc.description.sponsorshipEuropeElectrostructural Tomography - Towards Multiparametric Imaging of Cardiac Electrical Disordersen_US
bordeaux.journalJournal of Cardiovascular Magnetic Resonanceen_US
bordeaux.volume23en_US
bordeaux.hal.laboratoriesCentre de Recherche Cardio-Thoracique de Bordeaux (CRCTB) - U 1045en_US
bordeaux.issue1en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionINSERMen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.identifierhal-03811355
hal.version1
hal.date.transferred2022-10-11T16:40:19Z
hal.exporttrue
dc.rights.ccPas de Licence CCen_US
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