Linked Life Data

17707165

Source:http://linkedlifedata.com/resource/pubmed/id/17707165

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2007-8-20
pubmed:abstractText
gamma-Aminobutyric acid (GABA) is the major inhibitory neurotransmitter in human brain and has been implicated in several neuropsychiatric disorders. In vivo human brain GABA concentrations are near the detection limit for magnetic resonance spectroscopy ( approximately 1 mM), and because of overlap with more abundant compounds, spectral editing is generally necessary to detect GABA. In previous reports, GABA spectra edited by J-difference spectroscopy vary considerably in appearance. We have evaluated the factors that affect GABA spectra and the conditions necessary for robust acquisition of J-difference spectra from arbitrary brain regions. In particular, we demonstrate that variations in spectral quality can be explained in part by the incoherent addition of transients that results from shot to shot frequency and phase variations. An automated time-domain spectral alignment strategy that enables reproducible acquisition of high-quality GABA spectra at 3 T with a standard 30-cm T/R volume coil is presented. Representative GABA spectra from human frontal lobe, an area where susceptibility-induced frequency and phase variations are especially troublesome, that demonstrate the robustness of the acquisition and data handling strategy used in this study are presented.
pubmed:grant
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-10025609, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-10861994, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-11241712, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-11253954, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-11870830, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-11979581, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-11986998, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-12111954, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-12815674, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-15170830, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-15237082, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-15569888, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-15607299, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-2573696, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-4001160, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-448355, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-7582599, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-7984061, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-8516315, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-9438430, http://linkedlifedata.com/resource/pubmed/commentcorrection/17707165-9802468
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0730-725X
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1032-8
pubmed:dateRevised
2010-12-3
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
A practical guide to robust detection of GABA in human brain by J-difference spectroscopy at 3 T using a standard volume coil.
pubmed:affiliation
Institute of Imaging Science, Vanderbilt University, Nashville, TN 37232-2675, USA. kevin.waddell@vanderbilt.edu
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural