A 3D trajectory for undersampling k-space in MRSI applications

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dc.contributor.authorUribe, Sergio
dc.contributor.authorGuesalaga, Andres
dc.contributor.authorMir, Roberto
dc.contributor.authorGuarini, Marcelo
dc.contributor.authorIrarrazaval, Pablo
dc.date.accessioned2024-01-10T13:10:47Z
dc.date.available2024-01-10T13:10:47Z
dc.date.issued2007
dc.description.abstractMagnetic resonance spectroscopic imaging (MRSI) is a noninvasive technique for producing spatially localized spectra. MRSI presents the important challenge of reducing the scan time while maintaining the spatial resolution. The preferred approach for this is to use time-varying readout gradients to collect the spatial and chemical-shift information. Fast, three-dimensional (3D) spatial encoded methods also reduce the scan time. Despite the existence of several new and faster 3D encoded methods, or k-space trajectories, for magnetic resonance imaging (MRI), only stack of spirals and echo planar have been studied in 3D MRSI. A novel formulation for designing fast, 3D k-space trajectory applicable to 3D MRSI is presented. This approach is simple and consists of rays expanding from the origin of k-space into a revolving sphere, collecting spectral data of all 3D spatial k-space at different times in the same scan. This article describes this new method and presents some results of its application to 3D MRSI. This technique allows some degree of undersampling; hence, it is possible to reconstruct high-quality undersampled spectroscopic imaging in order to recognize different compounds in short scan times. Additionally, the method is tested in regular 3D MRI. This proposed method can also be used for dynamic undersampled imaging. (c) 2007 Elsevier Inc. All rights reserved.
dc.fechaingreso.objetodigital03-04-2024
dc.format.extent9 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.mri.2006.10.001
dc.identifier.eissn1873-5894
dc.identifier.issn0730-725X
dc.identifier.pubmedidMEDLINE:17371724
dc.identifier.urihttps://doi.org/10.1016/j.mri.2006.10.001
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77934
dc.identifier.wosidWOS:000245614500008
dc.information.autorucIngeniería;Guarini M;S/I;99643
dc.information.autorucIngeniería;Guesalaga A;S/I;63871
dc.information.autorucIngeniería;Irarrázaval P;S/I;57376
dc.issue.numero3
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final358
dc.pagina.inicio350
dc.publisherELSEVIER SCIENCE INC
dc.revistaMAGNETIC RESONANCE IMAGING
dc.rightsacceso restringido
dc.subjectspectroscopic imaging
dc.subject3D k-space trajectory
dc.subjectMRI
dc.subjectBRAIN-TUMORS
dc.subjectECHO-PLANAR
dc.subjectRESOLUTION
dc.subjectNMR
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleA 3D trajectory for undersampling k-space in MRSI applications
dc.typeartículo
dc.volumen25
sipa.codpersvinculados99643
sipa.codpersvinculados63871
sipa.codpersvinculados57376
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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