Volumetric spectroscopic imaging with spiral-based k-space trajectories

Simple item page
dc.contributor.authorAdalsteinsson, E
dc.contributor.authorIrarrazabal, P
dc.contributor.authorTopp, S
dc.contributor.authorMeyer, C
dc.contributor.authorMacovski, A
dc.contributor.authorSpielman, DM
dc.date.accessioned2024-01-10T13:44:11Z
dc.date.available2024-01-10T13:44:11Z
dc.date.issued1998
dc.description.abstractSpiral-based k-space trajectories were applied in a spectroscopic imaging sequence with time-varying readout gradients to collect volumetric chemical shift information, In addition to spectroscopic imaging of low signal-to-noise ratio (SNR) brain metabolites, the spiral trajectories were used to rapidly collect reference signals from the high SNR water signal to automatically phase the spectra and to aid the reconstruction of metabolite maps. Spectral-spatial pulses were used for excitation and water suppression. The pulses were designed to achieve stable phase profiles in the presence of up to 20% variation in the radiofrequency field. A gridding algorithm was used to resample the data onto a rectilinear grid before fast Fourier transforms. This method was demonstrated by in vivo imaging of brain metabolites at 1.5 T with 10 slices of 18 x 18 pixels each. Nominal voxel size was 1.1 cc, spectral bandwidth was 400 Hz, scan time was 18 min for the metabolite scan and 3 min for the reference scan.
dc.description.funderNCI NIH HHS
dc.description.funderNATIONAL CANCER INSTITUTE
dc.format.extent10 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1002/mrm.1910390606
dc.identifier.issn0740-3194
dc.identifier.pubmedidMEDLINE:9621912
dc.identifier.urihttps://doi.org/10.1002/mrm.1910390606
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78861
dc.identifier.wosidWOS:000073759600006
dc.information.autorucIngeniería;Irarrázaval P;S/I;57376
dc.issue.numero6
dc.language.isoen
dc.nota.accesoSin adjunto
dc.pagina.final898
dc.pagina.inicio889
dc.publisherLIPPINCOTT WILLIAMS & WILKINS
dc.revistaMAGNETIC RESONANCE IN MEDICINE
dc.rightsregistro bibliográfico
dc.subjectspiral spectroscopic imaging
dc.subjectphased spectra
dc.subjectphase profile
dc.subjectgridding
dc.subjectMAGNETIC-RESONANCE SPECTROSCOPY
dc.subjectHUMAN-BRAIN
dc.subjectCHEMICAL-SHIFT
dc.subjectSELECTIVE EXCITATION
dc.subjectCEREBRAL METABOLITES
dc.subjectFOURIER INVERSION
dc.subjectNMR-SPECTROSCOPY
dc.subjectRELAXATION-TIMES
dc.subjectPROTON
dc.subjectINVIVO
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleVolumetric spectroscopic imaging with spiral-based k-space trajectories
dc.typeartículo
dc.volumen39
sipa.codpersvinculados57376
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Volumetric spectroscopic imaging with spiral based k space trajectories.pdf
Size:
2.72 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas