Resolution recovery in Turbo Spin Echo using segmented Half Fourier acquisition.

Santa Marta Pastrana, Cristina, Lafuente, Javier, Vaquero, Juan José, Garcia-Barreno, Pedro y Desco, Manuel . (2004) Resolution recovery in Turbo Spin Echo using segmented Half Fourier acquisition.. Magnetic Resonance Imaging

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Título Resolution recovery in Turbo Spin Echo using segmented Half Fourier acquisition.
Autor(es) Santa Marta Pastrana, Cristina
Lafuente, Javier
Vaquero, Juan José
Garcia-Barreno, Pedro
Desco, Manuel
Materia(s) Biomedicina
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.
Palabras clave TSE
FSE
Resolution
SNR
k-Space
Editor(es) Elsevier
Fecha 2004-04
Formato application/pdf
Identificador bibliuned:DptoFMyF-FCIE-Articulos-Csantamarta-0005
http://e-spacio.uned.es/fez/view/bibliuned:DptoFMyF-FCIE-Articulos-Csantamarta-0005
DOI - identifier 10.1016/J.MRI.2004.01.009
ISSN - identifier 1873-5894
Nombre de la revista Magnetic Resonance Imaging
Número de Volumen 22
Número de Issue 3
Página inicial 369
Página final 378
Publicado en la Revista Magnetic Resonance Imaging
Idioma eng
Versión de la publicación acceptedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales The registered version of this article, first published in Magnetic Resonance Imaging, is available online at the publisher's website: Elsevier https://doi.org/10.1016/J.MRI.2004.01.009
Notas adicionales La versión registrada de este artículo, publicado por primera vez en Magnetic Resonance Imaging, está disponible en línea en el sitio web del editor: Elsevier https://doi.org/10.1016/J.MRI.2004.01.009

 
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Creado: Fri, 26 Jan 2024, 04:27:21 CET