ArticleJournal of magnetic resonance imaging : JMRI2018
Improved detection of fMRI activation in the cerebellum at 7T with dielectric pads extending the imaging region of a commercial head coil.
Article in Journal of magnetic resonance imaging : JMRI, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 45 citations in OpenAlex.
- A bias-accounting meta-analytic approach refines and expands the cerebellar behavioral topography.Neuroscience and biobehavioral reviews · 2025Pooled it
- Intraoperative neurophysiology of the cerebellum: a tabula rasa.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2020Pooled it
- Modular Metamaterials for Adaptable MRI Signal Control: Combining Dipole Array With a New Hexagon-Based Artificial Dielectrics.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Advancing Cerebro-cerebellar Network Imaging with Ultra-high Field (7T) MRI: Progress and Future Challenges.Cerebellum (London, England) · 2026Review
- Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain.Advanced materials (Deerfield Beach, Fla.) · 2026Article
- Easy-to-useMagnetic resonance in medicine · 2025Article
- RF shimming strategy for an open 60-channel RF transmit 7T MRI head coil for routine use on the single transmit mode.Magnetic resonance in medicine · 2025Article
- A bias-accounting meta-analytic approach refines and expands the cerebellar behavioral topography.bioRxiv : the preprint server for biology · 2025Article
- Improving the Sensitivity of Task-Based Multi-Echo Functional Magnetic Resonance Imaging viaBrain sciences · 2024Article
- A theoretical framework to investigate the effect of high permittivity materials in MRI using anatomy-mimicking cylinders.Magnetic resonance in medicine · 2024Article
- Subwavelength dielectric waveguide for efficient travelling-wave magnetic resonance imaging.Nature communications · 2024Article
- Head-and-neck multichannel B1Magnetic resonance in medicine · 2024Article
- The use of 7T MRI in multiple sclerosis: review and consensus statement from the North American Imaging in Multiple Sclerosis Cooperative.Brain communications · 2024Review
- A Comparative Perspective on the Cerebello-Cerebral System and Its Link to Cognition.Cerebellum (London, England) · 2023Review
- A New Combination of Radio-Frequency Coil Configurations Using High-Permittivity Materials and Inductively Coupled Structures for Ultrahigh-Field Magnetic Resonance Imaging.Sensors (Basel, Switzerland) · 2022Article
- Neuroimaging at 7 Tesla: a pictorial narrative review.Quantitative imaging in medicine and surgery · 2022Review
- A nine-channel transmit/receive array for spine imaging at 10.5 T: Introduction to a nonuniform dielectric substrate antenna.Magnetic resonance in medicine · 2022Article
- A Comparative Study of Birdcage RF Coil Configurations for Ultra-High Field Magnetic Resonance Imaging.Sensors (Basel, Switzerland) · 2022Article
- A local multi-transmit coil combined with a high-density receive array for cerebellar fMRI at 7 T.NMR in biomedicine · 2021Article
- 7T MR Safety.Journal of magnetic resonance imaging : JMRI · 2021Article
Corrections and comments
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Authors and funding
9 authors at 1 institution in 1 country.
Funding
Abstract
backgroundThere is growing interest in detecting cerebro-cerebellar circuits, which requires adequate blood oxygenation level dependent contrast and signal-to-noise ratio (SNR) throughout the brain. Although 7T scanners offer increased SNR, coverage of commercial head coils is currently limited to the cerebrum. PURPOSE: To improve cerebellar functional MRI (fMRI) at 7T with high permittivity material (HPM) pads extending the sensitivity of a commercial coil. STUDY TYPE: Simulations were used to determine HPM pad configuration and assess radiofrequency (RF) safety. In vivo experiments were performed to evaluate RF field distributions and SNR and assess improvements of cerebellar fMRI. SUBJECTS: Eight healthy volunteers enrolled in a prospective motor fMRI study with and without HPM. FIELD STRENGTH/SEQUENCE: Gradient echo (GRE) echo planar imaging for fMRI, turbo FLASH for flip angle mapping, GRE sequence for SNR maps, and T ASSESSMENT: Field maps, SNR maps, and anatomical images were evaluated for coverage. Simulation results were used to assess SAR levels of the experiment. Activation data from fMRI experiments were compared with and without HPM pads. STATISTICAL TESTS: fMRI data were analyzed using FEAT FSL for each subject followed by group level analysis using paired t-test of acquisitions with and without HPM.
resultsSimulations showed 52% improvement in transmit efficiency in cerebellum with HPM and SAR levels well below recommended limits. Experiments showed 27% improvement in SNR in cerebellum and improvement in coverage on T DATA
conclusionHPM pads can improve cerebellar fMRI at 7T with a commonly-used head coil without compromising RF safety. LEVEL OF EVIDENCE: 2 Technical Efficacy: Stage 1 J. MAGN. RESON. IMAGING 2018;48:431-440.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.