3D gradient echo snapshot CEST MRI with low power saturation for human studies at 3T.
Algorithms
Brain
/ diagnostic imaging
Brain Neoplasms
/ diagnostic imaging
Contrast Media
Gray Matter
/ diagnostic imaging
Healthy Volunteers
Humans
Hydrogen-Ion Concentration
Image Enhancement
/ methods
Image Interpretation, Computer-Assisted
/ methods
Imaging, Three-Dimensional
/ methods
Magnetic Resonance Imaging
/ methods
Neoplasms
/ diagnostic imaging
Normal Distribution
Reproducibility of Results
Signal-To-Noise Ratio
White Matter
/ diagnostic imaging
APT
NOE
brain tumor
chemical exchange saturation transfer
magnetization transfer
Journal
Magnetic resonance in medicine
ISSN: 1522-2594
Titre abrégé: Magn Reson Med
Pays: United States
ID NLM: 8505245
Informations de publication
Date de publication:
04 2019
04 2019
Historique:
received:
13
08
2018
revised:
21
09
2018
accepted:
25
09
2018
pubmed:
16
11
2018
medline:
18
3
2020
entrez:
16
11
2018
Statut:
ppublish
Résumé
For clinical implementation, a chemical exchange saturation transfer (CEST) imaging sequence must be fast, with high signal-to-noise ratio (SNR), 3D coverage, and produce robust contrast. However, spectrally selective CEST contrast requires dense sampling of the Z-spectrum, which increases scan duration. This article proposes a compromise: using a 3D snapshot gradient echo (GRE) readout with optimized CEST presaturation, sampling, and postprocessing, highly resolved Z-spectroscopy at 3T is made possible with 3D coverage at almost no extra time cost. A 3D snapshot CEST sequence was optimized for low-power CEST MRI at 3T. Pulsed saturation was optimized for saturation power and saturation duration. Spectral sampling and postprocessing (B Low-power saturation was achieved by a train of 80 pulses of duration t A sophisticated CEST tool ready for clinical application was developed and tested for feasibility.
Identifiants
pubmed: 30431179
doi: 10.1002/mrm.27569
pmc: PMC6718050
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
2412-2423Subventions
Organisme : Max Planck Society, German Research Foundation (DFG)
ID : ZA 814/2-1
Pays : International
Organisme : European Union's Horizon 2020 research and innovation programme
ID : 667510
Pays : International
Organisme : EuropeanUnion's Horizon 2020 research and innovation programme
ID : 667510
Pays : International
Informations de copyright
© 2018 International Society for Magnetic Resonance in Medicine.
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