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@ARTICLE{Goerke:167469,
author = {S. Goerke$^*$ and J. Breitling$^*$ and A. Korzowski$^*$ and
D. Paech$^*$ and M. Zaiss and H.-P. Schlemmer$^*$ and M. E.
Ladd$^*$ and P. Bachert$^*$},
title = {{C}linical routine acquisition protocol for 3{D}
relaxation-compensated {APT} and r{NOE} {CEST}-{MRI} of the
human brain at 3{T}.},
journal = {Magnetic resonance in medicine},
volume = {86},
number = {1},
issn = {0740-3194},
address = {New York, NY [u.a.]},
publisher = {Wiley-Liss},
reportid = {DKFZ-2021-00372},
pages = {393-404},
year = {2021},
note = {#EA:E020#LA:E020# / 86(1):393-404},
abstract = {The value of relaxation-compensated amide proton transfer
(APT) and relayed nuclear Overhauser effect (rNOE) chemical
exchange saturation transfer (CEST)-MRI has already been
demonstrated in various neuro-oncological clinical
applications. Recently, we translated the approach from 7T
to a clinically relevant magnetic field strength of 3T.
However, the overall acquisition time was still too long for
a broad application in the clinical setting. The aim of this
study was to establish a shorter acquisition protocol whilst
maintaining the contrast behavior and reproducibility.Ten
patients with glioblastoma were examined using the previous
state-of-the-art acquisition protocol at 3T. The acquired
spectral data were retrospectively reduced to find the
minimal amount of required information that allows obtaining
the same contrast behavior. To further reduce the
acquisition time, also the image readout was accelerated and
the pre-saturation parameters were further optimized.In
total, the overall acquisition time could be reduced from 19
min to under 7 min. One key finding was that, when evaluated
by the relaxation-compensated inverse metric, a contrast
correction for B1 -field inhomogeneities at 3T can also be
achieved reliably with CEST data at only one B1 value. In
contrast, a 1-point B1 -correction was not sufficient for
the common linear difference evaluation. The reproducibility
of the new clinical routine acquisition protocol was similar
to the previous state-of-the-art protocol with limits of
agreement below $20\%.The$ substantial reduction in
acquisition time by about $64\%$ now allows the application
of 3D relaxation-compensated APT and rNOE CEST-MRI for
examinations of the human brain at 3T in clinical routine.},
keywords = {APT (Other) / CEST (Other) / MRI (Other) / cancer (Other) /
proteins (Other) / rNOE (Other)},
cin = {E020 / E010},
ddc = {610},
cid = {I:(DE-He78)E020-20160331 / I:(DE-He78)E010-20160331},
pnm = {315 - Bildgebung und Radioonkologie (POF4-315)},
pid = {G:(DE-HGF)POF4-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33586217},
doi = {10.1002/mrm.28699.},
url = {https://inrepo02.dkfz.de/record/167469},
}