TY  - JOUR
AU  - Chacon-Caldera, Jorge
AU  - Fischer, Alexander
AU  - Malzacher, Matthias
AU  - Vetter, Yannik
AU  - Davids, Mathias
AU  - Flöser, Martina
AU  - Stumpf, Christopher
AU  - Schad, Lothar R
TI  - Evaluation of stacked resonators to enhance the performance of a surface receive-only array for prostate MRI at 3 Tesla.
JO  - Magnetic resonance imaging
VL  - 53
SN  - 0730-725X
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - DKFZ-2018-01593
SP  - 164 - 172
PY  - 2018
AB  - Prostate MRI is an important tool to diagnose and characterize cancer. High local sensitivity and good parallel imaging performance are of paramount importance for diagnostic quality and efficiency. The purpose of this work was to evaluate stacked resonators as part of a surface receiver array for prostate MRI at 3 Tesla. A base array of 6-channels consisting of a flexible anterior and a rigid posterior part were built each with three loop coils. A pair of stacked resonators was added concentrically to the center loops (anterior and posterior) of the base array. The evaluated stacked resonators were butterflies, composites and dipoles which yielded a total of three 8-channel arrays. The arrays were compared using noise correlations and single-channel signal-to-noise ratio maps in a phantom. Combined signal-to-noise ratio maps and parallel imaging performances were measured and compared in vivo in 6 healthy volunteers. The results were compared to the base and a commercial array. The SNR values in the prostate yielded by all the arrays were not statistically different using fully sampled k-space. However, significant differences were found in the parallel imaging performance of the arrays. More specifically, up to 88
LB  - PUB:(DE-HGF)16
C6  - pmid:30053430
DO  - DOI:10.1016/j.mri.2018.07.010
UR  - https://inrepo02.dkfz.de/record/140838
ER  -