ArticleMagnetic resonance in medicine2018
Density-weighted concentric circle trajectories for high resolution brain magnetic resonance spectroscopic imaging at 7T.
Article in Magnetic resonance in medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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36 citing papers in PubMed.
- Short Echo-Time Spiral MRSI Versus Single-Voxel Spectroscopy in the Human Brain at 3 Tesla With Semi-LASER Localization.Magnetic resonance in medicine · 2026Article
- Ultrafast J-resolved magnetic resonance spectroscopic imaging for high-resolution metabolic brain imaging.Nature biomedical engineering · 2025Article
- Feasibility of High-Resolution Deuterium Metabolic Imaging of the Human Kidney Using Concentric Ring Trajectory Sampling at 7T.NMR in biomedicine · 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
- High-Resolution Mapping of Tumor and Peritumoral Glutamate and Glutamine in Gliomas Using 7-T MRSI.Radiology. Imaging cancer · 2025Article
- 3D deuterium metabolic imaging (DMI) of the human liver at 7 T using low-rank and subspace model-based reconstruction.Magnetic resonance in medicine · 2025Article
- Proton-free induction decay MRSI at 7 T in the human brain using an egg-shaped modified rosette K-space trajectory.Magnetic resonance in medicine · 2025Article
- Rosette Spectroscopic Imaging for Whole-Brain Slab Metabolite Mapping at 7T: Acceleration Potential and Reproducibility.Human brain mapping · 2025Article
- Exploring in vivo human brain metabolism at 10.5 T: Initial insights from MR spectroscopic imaging.NeuroImage · 2025Article
- Fast Hadamard-Encoded 7T Spectroscopic Imaging of Human Brain.Tomography (Ann Arbor, Mich.) · 2025Article
- ECCENTRIC: A fast and unrestrained approach for high-resolution in vivo metabolic imaging at ultra-high field MR.Imaging neuroscience (Cambridge, Mass.) · 2024Article
- Whole-brain deuterium metabolic imaging via concentric ring trajectory readout enables assessment of regional variations in neuronal glucose metabolism.Human brain mapping · 2024Article
- Reproducibility of 3D MRSI for imaging human brain glucose metabolism using direct (NeuroImage · 2023Article
- Article
- Reproducibility of 3D MRSI for imaging human brain glucose metabolism using direct (medRxiv : the preprint server for health sciences · 2023Article
- Three-dimensional, 2.5-minute, 7T phosphorus magnetic resonance spectroscopic imaging of the human heart using concentric rings.NMR in biomedicine · 2023Article
- Proton metabolic mapping of the brain at 7 T using a two-dimensional free induction decay-echo-planar spectroscopic imaging readout with lipid suppression.NMR in biomedicine · 2022Article
- 7T HR FID-MRSI Compared to Amino Acid PET: Glutamine and Glycine as Promising Biomarkers in Brain Tumors.Cancers · 2022Article
- Inter-subject stability and regional concentration estimates of 3D-FID-MRSI in the human brain at 7 T.NMR in biomedicine · 2021Article
- 7 Tesla and Beyond: Advanced Methods and Clinical Applications in Magnetic Resonance Imaging.Investigative radiology · 2021Review
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9 authors.
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Abstract
purposeFull-slice magnetic resonance spectroscopic imaging at ≥7 T is especially vulnerable to lipid contaminations arising from regions close to the skull. This contamination can be mitigated by improving the point spread function via higher spatial resolution sampling and k-space filtering, but this prolongs scan times and reduces the signal-to-noise ratio (SNR) efficiency. Currently applied parallel imaging methods accelerate magnetic resonance spectroscopic imaging scans at 7T, but increase lipid artifacts and lower SNR-efficiency further. In this study, we propose an SNR-efficient spatial-spectral sampling scheme using concentric circle echo planar trajectories (CONCEPT), which was adapted to intrinsically acquire a Hamming-weighted k-space, thus termed density-weighted-CONCEPT. This minimizes voxel bleeding, while preserving an optimal SNR. THEORY AND
methodsTrajectories were theoretically derived and verified in phantoms as well as in the human brain via measurements of five volunteers (single-slice, field-of-view 220 × 220 mm
resultsBy intrinsically sampling a Hamming-weighted k-space, density-weighted-CONCEPT removed Gibbs-ringing artifacts and had in vivo +9.5%, +24.4%, and +39.7% higher SNR than e-CONCEPT, elliptical phase-encoding, and the Controlled Aliasing In Parallel Imaging Results IN Higher Acceleration accelerated elliptical phase-encoding (all P < 0.05), respectively, which lead to improved metabolic maps.
conclusionDensity-weighted-CONCEPT provides clinically attractive full-slice high-resolution magnetic resonance spectroscopic imaging with optimal SNR at 7T. Magn Reson Med 79:2874-2885, 2018. © 2017 The Authors Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
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