TY  - JOUR
AU  - Ruck, Laurent
AU  - Egger, Nico
AU  - Wilferth, Tobias
AU  - Schirmer, Judith
AU  - Gast, Lena Vanessa
AU  - Nagelstraßer, Sophia
AU  - Wildenberg, Saskia
AU  - Bitz, Andreas
AU  - Lanz, Titus
AU  - Platt, Tanja
AU  - Konstandin, Simon
AU  - Kopp, Christoph
AU  - Uder, Michael
AU  - Nagel, Armin
TI  - Interleaved 23Na/1H MRI of the human heart at 7 T using a combined 23Na/1H coil setup and 1H parallel transmission.
JO  - Magnetic resonance in medicine
VL  - 94
IS  - 1
SN  - 1522-2594
CY  - New York, NY [u.a.]
PB  - Wiley-Liss
M1  - DKFZ-2025-00579
SP  - 231-241
PY  - 2025
N1  - #LA:E020# / Volume 94, Issue 1, July 2025, Pages 231-241
AB  - To evaluate the feasibility of interleaved 23Na/1H cardiac MRI at 7 T using 1H parallel transmission (pTx) pulses.A combined setup consisting of a 23Na volume coil and two 1H transceiver arrays was employed and the transmit and receive characteristics were compared in vitro with those of the uncombined radiofrequency coils. Furthermore, the implemented interleaved 23Na/1H pTx sequence was validated in phantom measurements and applied to four healthy subjects. For the latter, three customized 1H excitation pulses (universal and individual phase shims (UPS/IPS) and individual 4kT pulses (4kT)) were employed in the interleaved 23Na/1H pTx sequence and compared with the vendor-provided default cardiac phase shim (DPS).Combining both coils resulted in a reduction of the mean 23Na transmit field (B1 +) efficiency and 23Na signal-to-noise ratio by 18.9
KW  - 23Na RF birdcage coil (Other)
KW  - 7 Tesla (Other)
KW  - cardiac sodium (23Na) MRI (Other)
KW  - interleaved acquisition (Other)
KW  - parallel transmission (pTx) (Other)
LB  - PUB:(DE-HGF)16
C6  - pmid:40065602
DO  - DOI:10.1002/mrm.30426
UR  - https://inrepo02.dkfz.de/record/299842
ER  -