Rapid and accurate dictionary-based T
Journal
Journal of magnetic resonance imaging : JMRI
ISSN: 1522-2586
Titre abrégé: J Magn Reson Imaging
Pays: United States
ID NLM: 9105850
Informations de publication
Date de publication:
05 2019
05 2019
Historique:
received:
25
07
2018
revised:
03
08
2018
accepted:
04
09
2018
pubmed:
18
10
2018
medline:
25
8
2020
entrez:
18
10
2018
Statut:
ppublish
Résumé
Using lower refocusing flip angles in multi-echo turbo spin echo (ME-TSE) sequences at ultra-high magnetic field leads to non-monoexponential signal decay and overestimation of T To investigate the feasibility of a fast and accurate reconstruction of quantitative T Prospective. Phantom measurements with relaxation phantom, four healthy volunteers. 7 Tesla MRI, multi-echo turbo spin echo (ME-TSE), spin echo (SE), and B Based on Bloch simulations and the extended phase graph model, signal decay curves were calculated to account for nonrectangular slice profile, B Welch's t-test was used to compare T T The proposed dictionary-based ME-TSE approach provided accurate T 1 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2019;49:1253-1262.
Sections du résumé
BACKGROUND
Using lower refocusing flip angles in multi-echo turbo spin echo (ME-TSE) sequences at ultra-high magnetic field leads to non-monoexponential signal decay and overestimation of T
PURPOSE
To investigate the feasibility of a fast and accurate reconstruction of quantitative T
STUDY TYPE
Prospective.
SUBJECTS
Phantom measurements with relaxation phantom, four healthy volunteers.
FIELD STRENGTH/SEQUENCE
7 Tesla MRI, multi-echo turbo spin echo (ME-TSE), spin echo (SE), and B
ASSESSMENT
Based on Bloch simulations and the extended phase graph model, signal decay curves were calculated to account for nonrectangular slice profile, B
STATISTICAL TESTS
Welch's t-test was used to compare T
RESULTS
T
DATA CONCLUSIONS
The proposed dictionary-based ME-TSE approach provided accurate T
LEVEL OF EVIDENCE
1 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2019;49:1253-1262.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1253-1262Informations de copyright
© 2018 International Society for Magnetic Resonance in Medicine.