Simultaneous fat-free isotropic 3D anatomical imaging and 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:
16
06
2018
revised:
13
08
2018
accepted:
13
08
2018
pubmed:
16
10
2018
medline:
25
8
2020
entrez:
16
10
2018
Statut:
ppublish
Résumé
Improved knee cartilage morphological delineation and T To develop and assess an isotropic 3D lipid-insensitive T Prospective. Phantoms (n = 6) used in this study were designed to mimic the T A high-resolution isotropic 3D T Numerical simulations and phantom experiments were performed to optimize the LIBRE pulse. Phantom studies were carried out to test the accuracy of the technique against reference standard spin-echo (SE) T A two-tailed paired Student's t-test was used to compare the average T A LIBRE pulse of 1 msec suppressed fat with an RF excitation frequency offset of 1560 Hz and optimal RF excitation angle of 35°. These results were corroborated by phantom and knee experiments. Robust and homogeneous fat suppression was obtained (a fat signal-to-noise ratio (SNR) decrease of 86.4 ± 2.4%). In phantoms, T Homogeneous LIBRE fat signal suppression was achieved with a total RF pulse duration of 1 msec, allowing for the removal of chemical shift artifacts and resulting in improved cartilage delineation and precise T 2 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2019;49:1275-1284.
Sections du résumé
BACKGROUND
Improved knee cartilage morphological delineation and T
PURPOSE
To develop and assess an isotropic 3D lipid-insensitive T
STUDY TYPE
Prospective.
PHANTOM/SUBJECTS
Phantoms (n = 6) used in this study were designed to mimic the T
FIELD STRENGTH/SEQUENCE
A high-resolution isotropic 3D T
ASSESSMENT
Numerical simulations and phantom experiments were performed to optimize the LIBRE pulse. Phantom studies were carried out to test the accuracy of the technique against reference standard spin-echo (SE) T
STATISTICAL TESTS
A two-tailed paired Student's t-test was used to compare the average T
RESULTS
A LIBRE pulse of 1 msec suppressed fat with an RF excitation frequency offset of 1560 Hz and optimal RF excitation angle of 35°. These results were corroborated by phantom and knee experiments. Robust and homogeneous fat suppression was obtained (a fat signal-to-noise ratio (SNR) decrease of 86.4 ± 2.4%). In phantoms, T
DATA CONCLUSION
Homogeneous LIBRE fat signal suppression was achieved with a total RF pulse duration of 1 msec, allowing for the removal of chemical shift artifacts and resulting in improved cartilage delineation and precise T
LEVEL OF EVIDENCE
2 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2019;49:1275-1284.
Substances chimiques
Lipids
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1275-1284Informations de copyright
© 2018 International Society for Magnetic Resonance in Medicine.