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@ARTICLE{Korzowski:132490,
author = {A. Korzowski$^*$ and P. Bachert$^*$},
title = {{H}igh-resolution31{P} echo-planar spectroscopic imaging in
vivo at 7{T}.},
journal = {Magnetic resonance in medicine},
volume = {79},
number = {3},
issn = {0740-3194},
address = {New York, NY [u.a.]},
publisher = {Wiley-Liss},
reportid = {DKFZ-2018-00177},
pages = {1251 - 1259},
year = {2018},
abstract = {Conventional31P chemical shift imaging is time-consuming
and yields only limited spatial resolution. The purpose of
this study was to demonstrate feasibility of31P echo-planar
spectroscopic imaging (EPSI) in vivo at 7T.A 3D31P EPSI
sequence with trapezoidal-shaped gradient pulses was
implemented on a 7T MR scanner. To increase spectral width
with reduced demand on gradient performance, a multishot
approach was chosen. Acquisition weighting and31P-{1H}
double resonance for nuclear Overhauser signal enhancement
were applied to increase sensitivity.3D31P-{1H} EPSI data
from model solution and from human calf muscle and brain
were obtained from voxels with effective sizes of 4.1 to
16.2 cm3in measurement times of approximately 10 min.
Individual spectra showed well-resolved resonances of
endogenous31P-metabolites without artifacts. Volumetric
high-resolution31P-metabolite maps in vivo showed metabolic
heterogeneity of different tissues.In vivo31P EPSI at 7T
yields high-quality metabolic images. The proposed multishot
EPSI technique reduces the measurement times for acquisition
of volumetric high-resolution maps of31P-metabolites or
intracellular pH in human studies. Magn Reson Med
79:1251-1259, 2018. © 2017 International Society for
Magnetic Resonance in Medicine.},
cin = {E020},
ddc = {610},
cid = {I:(DE-He78)E020-20160331},
pnm = {315 - Imaging and radiooncology (POF3-315)},
pid = {G:(DE-HGF)POF3-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28639310},
doi = {10.1002/mrm.26785},
url = {https://inrepo02.dkfz.de/record/132490},
}