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@ARTICLE{AfsharOromieh:119415,
author = {A. Afshar-Oromieh$^*$ and U. Haberkorn$^*$ and H.-P.
Schlemmer$^*$ and M. Fenchel$^*$ and M. Eder$^*$ and M.
Eisenhut$^*$ and B. A. Hadaschik and A. Kopp-Schneider$^*$
and M. Röthke$^*$},
title = {{C}omparison of {PET}/{CT} and {PET}/{MRI} hybrid systems
using a 68{G}a-labelled {PSMA} ligand for the diagnosis of
recurrent prostate cancer: initial experience.},
journal = {European journal of nuclear medicine and molecular imaging},
volume = {41},
number = {5},
issn = {1619-7089},
address = {Heidelberg [u.a.]},
publisher = {Springer-Verl.},
reportid = {DKFZ-2017-00157},
pages = {887 - 897},
year = {2014},
abstract = {(68)Ga-labelled HBED-CC-PSMA is a highly promising tracer
for imaging recurrent prostate cancer (PCa). The intention
of this study was to evaluate the feasibility of PET/MRI
with this tracer.Twenty patients underwent PET/CT 1 h after
injection of the (68)Ga-PSMA ligand followed by PET/MRI 3 h
after injection. Data from the two investigations were first
analysed separately and then compared with respect to tumour
detection rate and radiotracer uptake in various tissues. To
evaluate the quantification accuracy of the PET/MRI system,
differences in SUVs between PET/CT and corresponding PET/MRI
were compared with differences in SUVs between PET/CT 1 h
and 3 h after injection in another patient cohort. This
cohort was investigated using the same PET/CT system.With
PET/MRI, different diagnostic sequences, higher contrast of
lesions and higher resolution of MRI enabled a subjectively
easier evaluation of the images. In addition, four unclear
findings on PET/CT could be clarified as characteristic of
PCa metastases by PET/MRI. However, in PET images of the
PET/MRI, a reduced signal was observed at the level of the
kidneys (in 11 patients) and around the urinary bladder (in
15 patients). This led to reduced SUVs in six lesions.
SUVmean values provided by the PET/MRI system were different
in muscles, blood pool, liver and spleen.PCa was detected
more easily and more accurately with Ga-PSMA PET/MRI than
with PET/CT and with lower radiation exposure. Consequently,
this new technique could clarify unclear findings on PET/CT.
However, scatter correction was challenging when the
specific (68)Ga-PSMA ligand was used. Moreover, direct
comparison of SUVs from PET/CT and PET/MR needs to be
conducted carefully.},
keywords = {Glu-NH-CO-NH-Lys-(Ahx)-((68)Ga(HBED-CC)) (NLM Chemicals) /
Oligopeptides (NLM Chemicals) / Radiopharmaceuticals (NLM
Chemicals) / Edetic Acid (NLM Chemicals)},
cin = {E060 / E010 / E030 / C060},
ddc = {610},
cid = {I:(DE-He78)E060-20160331 / I:(DE-He78)E010-20160331 /
I:(DE-He78)E030-20160331 / I:(DE-He78)C060-20160331},
pnm = {315 - Imaging and radiooncology (POF3-315)},
pid = {G:(DE-HGF)POF3-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:24352789},
doi = {10.1007/s00259-013-2660-z},
url = {https://inrepo02.dkfz.de/record/119415},
}