ArticleMagnetic resonance in medicine2019
Non-Cartesian GRAPPA and coil combination using interleaved calibration data - application to concentric-ring MRSI of the human brain at 7T.
Article in Magnetic resonance in medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed.
- Motion Correction in High-Resolution 3D Brain MRSI Without Water and Lipid Suppression.Magnetic resonance in medicine · 2026Article
- Myo-Inositol Deficiency, Structural Brain Changes, and Cerebral Perfusion Alterations in Classic Galactosemia: Preliminary Insights From a Multiparametric MRI Study.Journal of inherited metabolic disease · 2025Article
- From a Voxel to Maps: A Comparative Study of sLASER SVS and 3D-CRT-FID-MRSI at 3 T and 7 T.medRxiv : the preprint server for health sciences · 2025Article
- Exploring in vivo human brain metabolism at 10.5 T: Initial insights from MR spectroscopic imaging.NeuroImage · 2025Article
- ECCENTRIC: A fast and unrestrained approach for high-resolution in vivo metabolic imaging at ultra-high field MR.Imaging neuroscience (Cambridge, Mass.) · 2024Article
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- IntegratingNeuroImage · 2022Article
- 7T HR FID-MRSI Compared to Amino Acid PET: Glutamine and Glycine as Promising Biomarkers in Brain Tumors.Cancers · 2022Article
- Whole-brain high-resolution metabolite mapping with 3D compressed-sensing SENSE low-rankNMR in biomedicine · 2022Article
- Inter-subject stability and regional concentration estimates of 3D-FID-MRSI in the human brain at 7 T.NMR in biomedicine · 2021Article
- Achieving high-resolutionJournal of magnetic resonance (San Diego, Calif. : 1997) · 2021Article
- Accelerated MR spectroscopic imaging-a review of current and emerging techniques.NMR in biomedicine · 2021Review
- Whole-Slab 3D MR Spectroscopic Imaging of the Human Brain With Spiral-Out-In Sampling at 7T.Journal of magnetic resonance imaging : JMRI · 2021Article
- Lipid-suppressed and tissue-fraction corrected metabolic distributions in human central brain structures using 2DBrain and behavior · 2020Article
- An integrated RF-receive/BScientific reports · 2020Article
- Intra-session and inter-subject variability of 3D-FID-MRSI using single-echo volumetric EPI navigators at 3T.Magnetic resonance in medicine · 2020Article
- High-resolution metabolic imaging of high-grade gliomas using 7T-CRT-FID-MRSI.NeuroImage. Clinical · 2020Article
- Non-Cartesian GRAPPA and coil combination using interleaved calibration data - application to concentric-ring MRSI of the human brain at 7T.Magnetic resonance in medicine · 2019Article
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8 authors.
Funding
Abstract
purposeProton MR spectroscopic imaging (MRSI) benefits from B
methodsSix healthy volunteers were scanned at 7T. Three calibration datasets for coil combination and PI were recorded: a) iMUSICAL, b) static MUSICAL as prescan, c) moved MUSICAL as prescan with misaligned head position. The coil combination performance, including motion sensitivity, of iMUSICAL was compared to MUSICAL for single-slice free induction decay (FID)-MRSI. Through-time/through-k-space-GRAPPA with constant/variable-density undersampling was evaluated on the same data, comparing the three calibration datasets. Additionally, the proposed method was successfully applied to 3D whole-brain FID-MRSI.
resultsUsing iMUSICAL for coil combination yielded the highest signal-to-noise ratio (SNR) (+9%) and lowest Cramer-Rao lower bounds (CRLBs) (-6%) compared to both MUSICAL approaches, with similar metabolic map quality. Also, excellent mean g-factors of 1.07 and low residual lipid aliasing were obtained when using iMUSICAL as calibration data for two-fold, variable-density undersampling, while significantly degraded metabolic maps were obtained using the misaligned MUSICAL calibration data.
conclusionThrough-time/through-k-space-GRAPPA can accelerate already time-efficient non-Cartesian spatial-spectral 2D/3D-MRSI encoding even further. Particularly promising results have been achieved using iMUSICAL as a robust, interleaved multipurpose calibration for MRSI reconstruction, without extra calibration prescan.
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