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@ARTICLE{Liao:866638,
author = {Liao, Yupeng and Lechea, Nazim and Magill, Arthur W. and
Worthoff, Wieland A. and Gras, Vincent and Shah, N. J.},
title = {{C}orrelation of quantitative conductivity mapping and
total tissue sodium concentration at 3{T}/4{T}},
journal = {Magnetic resonance in medicine},
volume = {82},
number = {4},
issn = {1522-2594},
address = {New York, NY [u.a.]},
publisher = {Wiley-Liss},
reportid = {FZJ-2019-05717},
pages = {1518 - 1526},
year = {2019},
abstract = {PurposeTo investigate the correlation between electrical
conductivity and sodium concentration, both measured in
vivo, in the human brain.MethodsConductivity measurements
were performed on samples with different sodium (Na+) and
agarose concentrations using a dielectric probe, and the
correlation between conductivity and Na+ content was
evaluated. Subsequently, brain conductivity and total Na+
content maps were measured in 8 healthy subjects using
phase‐based MREPT and sodium MRI, respectively. After
co‐registration and spatial normalization to the 1 mm 152
MNI brain atlas, the relationship between conductivity and
tissue sodium concentration (TSC) was examined within
different brain regions.ResultsThe conductivities of agarose
gels increased linearly with NaCl concentration, while
remaining almost independent of agarose content. When
measured in healthy subjects, conductivities showed positive
correlation with total tissue sodium concentration (R =
0.39, P < 0.005). The same trend was found in gray matter (R
= 0.36, P < 0.005) and in white matter (R = 0.28, P <
0.05).ConclusionTissue conductivity shows a positive
correlation with total sodium concentration. Conductivity
might serve as a novel technique to visualize the total
tissue electrolyte concentration, although refinements in
the consideration of e.g., tissue water content, would be
necessary to improve the quantitative value.},
cin = {INM-4 / INM-11 / JARA-BRAIN},
ddc = {610},
cid = {I:(DE-Juel1)INM-4-20090406 / I:(DE-Juel1)INM-11-20170113 /
$I:(DE-82)080010_20140620$},
pnm = {573 - Neuroimaging (POF3-573)},
pid = {G:(DE-HGF)POF3-573},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31095776},
UT = {WOS:000483917000024},
doi = {10.1002/mrm.27787},
url = {https://juser.fz-juelich.de/record/866638},
}