Resolution recovery in Turbo Spin Echo using segmented Half Fourier acquisition

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Show simple item record Santa Marta, Cristina Lafuente, Javier Vaquero López, Juan José García Barreno, Pedro Desco Menéndez, Manuel 2010-10-06T08:18:14Z 2010-10-06T08:18:14Z 2004-04
dc.identifier.bibliographicCitation Magnetic Resonance Imaging, 2004, vol. 22, n. 3, p. 369-378
dc.identifier.issn 0730-725X
dc.description.abstract Turbo Spin Echo (TSE) is a sequence of choice for obtaining T2-weighted images. TSE reduces acquisition time by acquiring several echoes within each TR, at the cost of introducing an exponential weighting in the k-space that leads to a certain image blurring. This is particularly important for short-T2 structures, which can even disappear if their size in the phase encoding direction is comparable to the degree of blurring. This article suggests the use of a combination of Half Fourier (HF) and segmented (multishot) TSE (sHF-TSE) to recover the original resolution of the SE images. The improved symmetry of the dataset achieved by HF reconstruction is used to increase the resolution of the TSE images. The proposed combination, available in most clinical scanners, reduces the blurring artifact inherent to the TSE sequence without increasing the scan time or the number of acquisitions, but at the cost of a slight reduction of the signal-to-noise ratios (SNR). Qualitative and quantitative results are presented using both numerical simulation and imaging. Significant edge enhancement has been achieved for structures with short T2, (narrowing of the full width at half maximum [FWHM] up to 45%). The proposed sequence is more sensitive to movement artifacts but has proven to be superior to the conventional TSE for imaging static structures
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights © Elsevier
dc.subject.other TSE
dc.subject.other FSE
dc.subject.other Resolution
dc.subject.other SNR
dc.subject.other k-Space
dc.title Resolution recovery in Turbo Spin Echo using segmented Half Fourier acquisition
dc.type article PeerReviewed
dc.description.status Publicado
dc.subject.eciencia Biología y Biomedicina
dc.identifier.doi 10.1016/j.mri.2004.01.009
dc.rights.accessRights openAccess
dc.identifier.publicationfirstpage 369
dc.identifier.publicationissue 3
dc.identifier.publicationlastpage 378
dc.identifier.publicationtitle Magnetic Resonance Imaging
dc.identifier.publicationvolume 22
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