A 32-channel parallel transmit system add-on for 7T MRI.
Journal
PloS one
ISSN: 1932-6203
Titre abrégé: PLoS One
Pays: United States
ID NLM: 101285081
Informations de publication
Date de publication:
2019
2019
Historique:
received:
05
04
2019
accepted:
29
08
2019
entrez:
13
9
2019
pubmed:
13
9
2019
medline:
7
3
2020
Statut:
epublish
Résumé
A 32-channel parallel transmit (pTx) add-on for 7 Tesla whole-body imaging is presented. First results are shown for phantom and in-vivo imaging. The add-on system consists of a large number of hardware components, including modulators, amplifiers, SAR supervision, peripheral devices, a control computer, and an integrated 32-channel transmit/receive body array. B1+ maps in a phantom as well as B1+ maps and structural images in large volunteers are acquired to demonstrate the functionality of the system. EM simulations are used to ensure safe operation. Good agreement between simulation and experiment is shown. Phantom and in-vivo acquisitions show a field of view of up to 50 cm in z-direction. Selective excitation with 100 kHz sampling rate is possible. The add-on system does not affect the quality of the original single-channel system. The presented 32-channel parallel transmit system shows promising performance for ultra-high field whole-body imaging.
Identifiants
pubmed: 31513637
doi: 10.1371/journal.pone.0222452
pii: PONE-D-19-09705
pmc: PMC6742215
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e0222452Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
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