11755733

Source:http://linkedlifedata.com/resource/pubmed/id/11755733

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0024487, umls-concept:C0680011, umls-concept:C1280500, umls-concept:C1704922
pubmed:issue	9
pubmed:dateCreated	2001-12-28
pubmed:abstractText	2D MRSI suffers from the effect of the spatial response function due to the truncation of the sampling of k-space. Filtering of the k-space data-set is often used to suppress the side lobes caused by the effects of the SRF, where the sampled data-set is multiplied with a weighting function before inverse FT. Commonly used filters in MRSI are the cosine, Hanning and Hamming filters. The data-set is often interpolated into a larger image matrix size for analysis, where "Fourier interpolation" (FoI) and "cubic spline interpolation" (CSpI) are two common methods. In this work, the effects of k-space filtering in practical usage was examined, and the image representations of the object for the two interpolation methods were compared. This study showed that application of filtering improves the image representation of the structures in the object and should be used in MRSI. FoI correctly visualizes the information inherent in the data-set, while the features of the object were dependent on the position of the object relative the original matrix in the CSpI interpolated images. FoI should therefore be used for quantitative evaluation of MRSI images.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/8214883
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Nov
pubmed:issn	0730-725X
pubmed:author	pubmed-author:EkholmSS, pubmed-author:Forssell-AronssonEE, pubmed-author:LagerstrandKK, pubmed-author:LjungbergMM, pubmed-author:StarckGG, pubmed-author:Vikhoff-BaazBB
pubmed:issnType	Print
pubmed:volume	19
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	1227-34
pubmed:dateRevised	2009-11-3
pubmed:meshHeading	pubmed-meshheading:11755733-Algorithms, pubmed-meshheading:11755733-Brain, pubmed-meshheading:11755733-Computer Simulation, pubmed-meshheading:11755733-Image Processing, Computer-Assisted, pubmed-meshheading:11755733-Magnetic Resonance Spectroscopy, pubmed-meshheading:11755733-Phantoms, Imaging
pubmed:year	2001
pubmed:articleTitle	Effects of k-space filtering and image interpolation on image fidelity in (1)H MRSI.
pubmed:affiliation	Division of Medical Physics and Biomedical Engineering, Göteborg University, Sahlgrenska University Hospital, SE-413 45 Göteborg, Sweden. barbrovikhoff-baaz@vgregion.se
pubmed:publicationType	Journal Article, Comparative Study, Research Support, Non-U.S. Gov't