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@ARTICLE{Schuenke:124428,
author = {P. Schuenke$^*$ and C. Koehler$^*$ and A. Korzowski$^*$ and
J. Windschuh$^*$ and P. Bachert$^*$ and M. Ladd$^*$ and S.
Mundiyanapurath and D. Paech$^*$ and S. Bickelhaupt$^*$ and
D. Bonekamp$^*$ and H.-P. Schlemmer$^*$ and A. Radbruch$^*$
and M. Zaiss$^*$},
title = {{A}diabatically prepared spin-lock approach for
{T}1ρ-based dynamic glucose enhanced {MRI} at ultrahigh
fields.},
journal = {Magnetic resonance in medicine},
volume = {78},
number = {1},
issn = {0740-3194},
address = {New York, NY [u.a.]},
publisher = {Wiley-Liss},
reportid = {DKFZ-2017-01305},
pages = {215 - 225},
year = {2017},
abstract = {Chemical exchange sensitive spin-lock and related
techniques allow to observe the uptake of administered
D-glucose in vivo. The exchange-weighting increases with the
magnetic field strength, but inhomogeneities in the
radiofrequency (RF) field at ultrahigh field whole-body
scanners lead to artifacts in conventional spin-lock
experiments. Thus, our aim was the development of an
adiabatically prepared T1ρ -based imaging sequence
applicable to studies of glucose metabolism in tumor
patients at ultrahigh field strengths.An adiabatically
prepared on-resonant spin-lock approach was realized at a 7
Tesla whole-body scanner and compared with conventional
spin-lock. The insensitivity to RF field inhomogeneities as
well as the chemical exchange sensitivity of the approach
was investigated in simulations, model solutions and in the
human brain.The suggested spin-lock approach was shown to be
feasible for in vivo application at ultrahigh field
whole-body scanners and showed substantially improved image
quality compared with conventional spin-lock. The
sensitivity of the presented method to glucose was verified
in model solutions and a glucose contrast was observed in a
glioblastoma patient after intravenous administration of
glucose solution.An adiabatically prepared spin-lock
preparation was presented that enables a homogeneous and
chemical exchange sensitive T1ρ -based imaging at
ultra-high field whole-body scanners, e.g., for T1ρ -based
dynamic glucose enhanced MRI. Magn Reson Med 78:215-225,
2017. © 2016 International Society for Magnetic Resonance
in Medicine.},
cin = {E020 / E010},
ddc = {610},
cid = {I:(DE-He78)E020-20160331 / I:(DE-He78)E010-20160331},
pnm = {315 - Imaging and radiooncology (POF3-315)},
pid = {G:(DE-HGF)POF3-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:27521026},
doi = {10.1002/mrm.26370},
url = {https://inrepo02.dkfz.de/record/124428},
}