Mostrar el registro sencillo del ítem

Segmented golden ratio radial reordering with variable temporal resolution for dynamic cardiac MRI

hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
dc.contributor.authorHAN, Fei
hal.structure.identifierDavid Geffen School of Medicine [Los Angeles]
dc.contributor.authorZHOU, Ziwu
hal.structure.identifierCentre de résonance magnétique biologique et médicale [CRMBM]
dc.contributor.authorRAPACCHI, Stanislas
hal.structure.identifierDavid Geffen School of Medicine [Los Angeles]
dc.contributor.authorNGUYEN, Kim-Lien
hal.structure.identifierDavid Geffen School of Medicine [Los Angeles]
dc.contributor.authorFINN, J. Paul
hal.structure.identifierAdvanced Learning Evolutionary Algorithms [ALEA]
dc.contributor.authorHU, Peng
dc.date.issued2015-08
dc.identifier.issn0740-3194
dc.description.abstractEnPURPOSE: Golden ratio (GR) radial reordering allows for retrospective choice of temporal resolution by providing a near-uniform k-space sampling within any reconstruction window. However, when applying GR to electrocardiogram (ECG)-gated cardiac imaging, the k-space coverage may not be as uniform because a single reconstruction window is broken into several temporally isolated ones. The goal of this study was to investigate the image artifacts caused by applying GR to ECG-gated cardiac imaging and to propose a segmented GR method to address this issue. METHODS: Computer simulation and phantom experiments were used to evaluate the image artifacts resulting from three k-space sampling patterns (ie, uniform radial, conventional GR, and segmented GR). Two- and three-dimensional cardiac cine images were acquired in seven healthy subjects. Imaging artifacts due to k-space sampling nonuniformity were graded on a 5-point scale by an experienced cardiac imaging reader. RESULTS: Segmented GR provides more uniform k-space sampling that is independent of heart-rate variation than conventional GR. Cardiac cine images using segmented GR have significantly higher and more reliable image quality than conventional GR. CONCLUSION: Segmented GR successfully addresses the nonuniform sampling that occurs with combining conventional GR with ECG gating. This technique can potentially be applied to any ECG-gated cardiac imaging application to allow for retrospective selection of a reconstruction window. Magn Reson Med, 2015. © 2015 Wiley Periodicals, Inc.
dc.language.isoen
dc.publisherWiley
dc.subject.encardiac MRI
dc.subject.engolden ratio
dc.subject.enRF golden angle radial
dc.subject.ensegmented k-space
dc.title.enSegmented golden ratio radial reordering with variable temporal resolution for dynamic cardiac MRI
dc.typeArticle de revue
dc.identifier.doi10.1002/mrm.25861
dc.subject.halSciences du Vivant [q-bio]/Ingénierie biomédicale
bordeaux.journalMagnetic Resonance in Medicine
bordeaux.peerReviewedoui
hal.identifierhal-01414335
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01414335v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Magnetic%20Resonance%20in%20Medicine&rft.date=2015-08&rft.eissn=0740-3194&rft.issn=0740-3194&rft.au=HAN,%20Fei&ZHOU,%20Ziwu&RAPACCHI,%20Stanislas&NGUYEN,%20Kim-Lien&FINN,%20J.%20Paul&rft.genre=article


Archivos en el ítem

ArchivosTamañoFormatoVer

No hay archivos asociados a este ítem.

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem