Multiacquisition Variable-Resonance Image Combination Selective Can Improve Image Quality and Reproducibility for Metallic Implants in the Lumbar Spine.
MAVRIC SL
implant
metallic artifact reduction
Journal
Acta medica Okayama
ISSN: 0386-300X
Titre abrégé: Acta Med Okayama
Pays: Japan
ID NLM: 0417611
Informations de publication
Date de publication:
Apr 2021
Apr 2021
Historique:
entrez:
6
5
2021
pubmed:
7
5
2021
medline:
22
3
2022
Statut:
ppublish
Résumé
The aim of this study is to evaluate how metallic artifacts in the lumbar spine can affect images obtained from magnetic resonance (MR) sequences. We performed a phantom experiment by scanning an agar containing an orthopedic metallic implant using 64-channel multidetector row computed tomography (CT) and a 3-tesla MR unit. We compared the reproducibility in each measurement, enlargement or reduction ratio of the CT and MR measurements, and signal deviation in each voxel from the control. The reproducibility on CT and multiacquisition variable-resonance image combination selective (MAVRIC SL) was good, but that on the other MR sequences showed either fixed bias or proportional bias. The reduction ratios of the distance between the nails were significantly smaller in MAVRIC SL than in the other MR sequences after CT measurements (p<0.001, respectively). MAVRIC SL was able to reduce the metallic artifact, permitting observation of the tissue surrounding the metal with good reproducibility.
Substances chimiques
Metals
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
187-197Déclaration de conflit d'intérêts
No potential conflict of interest relevant to this article was reported.
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