14587014

Source:http://linkedlifedata.com/resource/pubmed/id/14587014

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0024485, umls-concept:C0180979, umls-concept:C0337026, umls-concept:C0523113, umls-concept:C1413226, umls-concept:C1521828, umls-concept:C1707520, umls-concept:C2698333
pubmed:issue	5
pubmed:dateCreated	2003-10-30
pubmed:abstractText	Dynamic images of natural objects exhibit significant correlations in k-space and time. Thus, it is feasible to acquire only a reduced amount of data and recover the missing portion afterwards. This leads to an improved temporal resolution, or an improved spatial resolution for a given amount of acquisition. Based on this approach, two methods were developed to significantly improve the performance of dynamic imaging, named k-t BLAST (Broad-use Linear Acquisition Speed-up Technique) and k-t SENSE (SENSitivity Encoding) for use with a single or multiple receiver coils, respectively. Signal correlations were learned from a small set of training data and the missing data were recovered using all available information in a consistent and integral manner. The general theory of k-t BLAST and k-t SENSE is applicable to arbitrary k-space trajectories, time-varying coil sensitivities, and under- and overdetermined reconstruction problems. Examples from ungated cardiac imaging demonstrate a 4-fold acceleration (voxel size 2.42 x 2.52 mm(2), 38.4 fps) with either one or six receiver coils. k-t BLAST and k-t SENSE are applicable to many areas, especially those exhibiting quasiperiodic motion, such as imaging of the heart, the lungs, the abdomen, and the brain under periodic stimulation.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/8505245
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Nov
pubmed:issn	0740-3194
pubmed:author	pubmed-author:BoesigerPeterP, pubmed-author:PruessmannKlaas PKP, pubmed-author:TsaoJeffreyJ
pubmed:copyrightInfo	Copyright 2003 Wiley-Liss, Inc.
pubmed:issnType	Print
pubmed:volume	50
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	1031-42
pubmed:dateRevised	2006-11-15
pubmed:meshHeading	pubmed-meshheading:14587014-Heart, pubmed-meshheading:14587014-Humans, pubmed-meshheading:14587014-Image Processing, Computer-Assisted, pubmed-meshheading:14587014-Magnetic Resonance Imaging, pubmed-meshheading:14587014-Signal Processing, Computer-Assisted
pubmed:year	2003
pubmed:articleTitle	k-t BLAST and k-t SENSE: dynamic MRI with high frame rate exploiting spatiotemporal correlations.
pubmed:affiliation	Institute for Biomedical Engineering, University of Zurich, and Swiss Federal Institute of Technology (ETH) Zurich, Zurich, Switzerland.
pubmed:publicationType	Journal Article, Research Support, Non-U.S. Gov't