MRI of Implantation Sites Using Parallel Transmission of an Optimized Radiofrequency Excitation Vector.
MRI
RF array
implant
parallel transmission
radiofrequency
safety
transmission field shimming
Journal
Tomography (Ann Arbor, Mich.)
ISSN: 2379-139X
Titre abrégé: Tomography
Pays: Switzerland
ID NLM: 101671170
Informations de publication
Date de publication:
08 03 2023
08 03 2023
Historique:
received:
26
01
2023
revised:
03
03
2023
accepted:
05
03
2023
entrez:
24
3
2023
pubmed:
25
3
2023
medline:
28
3
2023
Statut:
epublish
Résumé
Postoperative care of orthopedic implants is aided by imaging to assess the healing process and the implant status. MRI of implantation sites might be compromised by radiofrequency (RF) heating and RF transmission field (B1+) inhomogeneities induced by electrically conducting implants. This study examines the applicability of safe and B1+-distortion-free MRI of implantation sites using optimized parallel RF field transmission (pTx) based on a multi-objective genetic algorithm (GA). Electromagnetic field simulations were performed for eight eight-channel RF array configurations (
Identifiants
pubmed: 36961008
pii: tomography9020049
doi: 10.3390/tomography9020049
pmc: PMC10037644
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
603-620Références
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