Possible artifacts in dynamic CEST MRI due to motion and field alterations.
Journal
Journal of magnetic resonance (San Diego, Calif. : 1997)
ISSN: 1096-0856
Titre abrégé: J Magn Reson
Pays: United States
ID NLM: 9707935
Informations de publication
Date de publication:
01 2019
01 2019
Historique:
received:
21
08
2018
revised:
09
11
2018
accepted:
12
11
2018
pubmed:
1
12
2018
medline:
17
7
2020
entrez:
1
12
2018
Statut:
ppublish
Résumé
Dynamic CEST studies such as dynamic glucose enhanced imaging, have gained a lot of attention recently. The expected CEST effects after injection are rather small in tissue especially at clinical field strengths (0.5-2%). Small movements during the dynamic CEST measurement together with a subtraction-based evaluation can lead to pseudo CEST effects of the same order of magnitude. These artifacts are studied herein. A brain tumor patient 3D-CEST baseline scan without glucose injection performed at 3 T is used to generate a virtual dynamic measurement introducing different kinds of simulated motion and B Minor motion (0.6 mm translations) and B Correction or mitigation for small motions is crucial for dynamic CEST imaging, especially in subjects with lesions. Concomitant B
Identifiants
pubmed: 30500568
pii: S1090-7807(18)30303-3
doi: 10.1016/j.jmr.2018.11.002
pii:
doi:
Substances chimiques
Contrast Media
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
16-22Informations de copyright
Copyright © 2018 The Authors. Published by Elsevier Inc. All rights reserved.