Accelerating dual cardiac phase images using phase encoding trajectories

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dc.contributor.authorLetelier, Karis
dc.contributor.authorUrbina, Jesus
dc.contributor.authorAndia, Marcelo
dc.contributor.authorTejos, Cristian
dc.contributor.authorIrarrazaval, Pablo
dc.contributor.authorPrieto, Claudia
dc.contributor.authorUribe, Sergio
dc.date.accessioned2024-01-10T13:45:33Z
dc.date.available2024-01-10T13:45:33Z
dc.date.issued2016
dc.description.abstractA three-dimensional dual-cardiac-phase (3D-DCP) scan has been proposed to acquire two data sets of the whole heart and great vessels during the end-diastolic and end-systolic cardiac phases in a single free-breathing scan. This method has shown accurate assessment of cardiac anatomy and function but is limited by long acquisition times. This work proposes to accelerate the acquisition and reconstruction of 3D-DCP scans by exploiting redundant information of the outer k-space regions of both cardiac phases. This is achieved using a modified radial-phase-encoding trajectory and gridding reconstruction with uniform coil combination. The end-diastolic acquisition trajectory was angularly shifted with respect to the end-systolic phase. Initially, a fully-sampled 3D-DCP scan was acquired to determine the optimal percentage of the outer k-space data that can be combined between cardiac phases. Thereafter, prospectively undersampled data were reconstructed based on this percentage. As gold standard images, the undersampled data were also reconstructed using iterative SENSE. To validate the method, image quality assessments and a cardiac volume analysis were performed. The proposed method was tested in thirteen healthy volunteers (mean age, 30 years). Prospectively undersampled data (R = 4) reconstructed with 50% combination led high quality images. There were no significant differences in the image quality and in the cardiac volume analysis between our method and iterative SENSE. In addition, the proposed approach reduced the reconstruction time from 40 min to 1 min. In conclusion, the proposed method obtains 3D-DCP scans with an image quality comparable to those reconstructed with iterative SENSE, and within a clinically acceptable reconstruction time. (C) 2016 Elsevier Inc. All rights reserved.
dc.description.funderFONDECYT
dc.description.funderCONICYT-PIA
dc.description.funderMedical Research Council
dc.fechaingreso.objetodigital03-04-2024
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.mri.2016.03.017
dc.identifier.eissn1873-5894
dc.identifier.issn0730-725X
dc.identifier.pubmedidMEDLINE:27067473
dc.identifier.urihttps://doi.org/10.1016/j.mri.2016.03.017
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79047
dc.identifier.wosidWOS:000380296200021
dc.information.autorucMedicina;Andia M;S/I;90691
dc.information.autorucIngeniería;Irarrazaval P;S/I;57376
dc.information.autorucIngeniería;Letelier K;S/I;162363
dc.information.autorucIngeniería;Tejos C;S/I;4027
dc.information.autorucMedicina;Urbina J ;S/I;149119
dc.information.autorucMedicina;Uribe S;S/I;16572
dc.information.autorucFacultad de Ingeniería; Prieto Vasquez, Claudia Del Carmen; S/I; 14195
dc.issue.numero7
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final1025
dc.pagina.inicio1017
dc.publisherELSEVIER SCIENCE INC
dc.revistaMAGNETIC RESONANCE IMAGING
dc.rightsacceso restringido
dc.subjectWhole-heart MRI
dc.subjectDual phase
dc.subjectView sharing
dc.subjectRadial phase encoding
dc.subjectCONGENITAL HEART-DISEASE
dc.subjectWHOLE-HEART
dc.subjectMAGNETIC-RESONANCE
dc.subjectMRI
dc.subjectCONTRAST
dc.subjectSENSE
dc.subjectANGIOGRAPHY
dc.subjectMORPHOLOGY
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleAccelerating dual cardiac phase images using phase encoding trajectories
dc.typeartículo
dc.volumen34
sipa.codpersvinculados90691
sipa.codpersvinculados57376
sipa.codpersvinculados162363
sipa.codpersvinculados4027
sipa.codpersvinculados149119
sipa.codpersvinculados16572
sipa.codpersvinculados14195
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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