Linked Life Data

12723517

Source:http://linkedlifedata.com/resource/pubmed/id/12723517

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2003-5-1
pubmed:abstractText
Techniques allowing the reduction of the measurement time of MR spectroscopic imaging of protons (1H SI) were studied in a 1.5-T whole-body MR tomograph. The purpose was to facilitate the inclusion of the modality into an MRT routine protocol for examination of the human brain. The techniques were evaluated in a study with 6 healthy volunteers. Shortening of the measurement times can be achieved by reducing the number of phase-encoding steps with spherical k-space sampling, or by using delay times during TR periods for excitation and detection of several slices or echos. Since the tomograph enables echo-planar imaging, multi-gradiennt-echo techniques were implemented, thus sparing one phase-encoding gradient and shortening the measurement time by a factor of N. Due to signal loss, however, this technique is applicable only when the concentration of the metabolites of interest is sufficiently high to obtain a signal-to-noise ratio of at least 2 with a single acquisition.
pubmed:language
ger
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0939-3889
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4-11
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
[Fast 1H-NR spectroscopic imaging of the human brain].
pubmed:affiliation
Abteilung Biophysik und Medizinische Strahlenphysik, Deutsches Krebsforschungszentrum (dkfz), Heidelberg.
pubmed:publicationType
Journal Article, English Abstract