ArticleJournal of magnetic resonance imaging : JMRI2015
Numerical evaluation of image homogeneity, signal-to-noise ratio, and specific absorption rate for human brain imaging at 1.5, 3, 7, 10.5, and 14T in an 8-channel transmit/receive array.
Article in Journal of magnetic resonance imaging : JMRI, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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Who cites it
28 citing papers in PubMed.
- Magnetic resonance imaging.Science advances · 2026Review
- Coaxial Dipole Array With Switching Transmit Sensitivities for Ultrahigh Field MRI.Magnetic resonance in medicine · 2026Article
- Comprehensive 4D Parallel Transmission Spatial-Spectral Pulse Design for Slab-Selective Uniform Water-Selective Excitation: Demonstration in the Human Brain at 7 Tesla.Magnetic resonance in medicine · 2026Article
- Evaluation of 0.55T MRI for Simultaneous R2* and Fat Fraction Quantification in the Presence of Hepatic Iron Overload and Steatosis Using Simulations and Phantoms.Magnetic resonance in medicine · 2026Article
- Advancing whole-brain BOLD functional MRI in humans at 10.5 T with motion-robust 3D echo-planar imaging, parallel transmission, and high-density radiofrequency receive coils.Magnetic resonance in medicine · 2026Article
- Parallel-transmission spatial spectral pulse design with local specific absorption rate control: Demonstration for robust uniform water-selective excitation in the human brain at 7 T.Magnetic resonance in medicine · 2025Article
- In vivo imaging of the human brain with the Iseult 11.7-T MRI scanner.Nature methods · 2024Article
- Unsupervised deep learning with convolutional neural networks for static parallel transmit design: A retrospective study.Magnetic resonance in medicine · 2024Article
- A 32-Channel Sleeve Antenna Receiver Array for Human Head MRI Applications at 10.5 T.IEEE transactions on medical imaging · 2023Article
- Germany's journey toward 14 Tesla human magnetic resonance.Magma (New York, N.Y.) · 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
- High-Density MRI RF Arrays Using Mixed Dipole Antennas and Microstrip Transmission Line Resonators.IEEE transactions on bio-medical engineering · 2022Article
- Simulation Study of Radio Frequency Safety and the Optimal Size of a Single-Channel Surface Radio Frequency Coil for Mice at 9.4 T Magnetic Resonance Imaging.Sensors (Basel, Switzerland) · 2022Article
- A Comparative Study of Birdcage RF Coil Configurations for Ultra-High Field Magnetic Resonance Imaging.Sensors (Basel, Switzerland) · 2022Article
- Improving magnetic resonance imaging with smart and thin metasurfaces.Scientific reports · 2021Article
- Comparison of 16-Channel Asymmetric Sleeve Antenna and Dipole Antenna Transceiver Arrays at 10.5 Tesla MRI.IEEE transactions on medical imaging · 2021Article
- RF Coil Setup forFrontiers in neurology · 2021Article
- Introduction of the snake antenna array: Geometry optimization of a sinusoidal dipole antenna for 10.5T body imaging with lower peak SAR.Magnetic resonance in medicine · 2020Article
- Evaluation of a 16-channel transceiver loop + dipole antenna array for human head imaging at 10.5 tesla.IEEE access : practical innovations, open solutions · 2020Article
- Magnetic resonance microscopy and correlative histopathology of the infarcted heart.Scientific reports · 2019Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
purposeTo predict signal-to-noise ratio (SNR) trends and absorbed energy in magnetic resonance imaging (MRI) of the brain up to 14T. MATERIALS AND
methodsA human head in an eight-channel transmit/receive coil was simulated with Maxwell and Bloch equations to determine excitation homogeneity with radiofrequency (RF) shimming, image homogeneity, SNR, and absorbed energy in MRI from 1.5 to 14T considering realistic field distributions and relaxation properties.
resultsRF shimming alone achieved a standard deviation in excitation flip angle less than 10° in mid-brain up to 14T, but produced a small region with low excitation on a lower slice. Current reconstruction methods may produce shading artifacts at 14T. SNR increases with a greater-than-linear rate for gradient recalled echo (GRE) sequences having short (2 msec) echo time (TE) and long relaxation time (TR) (∼2.3-fold increase from 7T to 14T), but a less-than-linear rate if TE is 10 msec (∼1.6-fold increase from 7T to 14T). Depending on the sequence, SNR per square root of imaging time may produce a less-than-linear increase with B0 . Whole-head absorbed energy shows a less-than-quadratic increase with B0 (1.7-fold increase from 7T to 14T).
conclusionNumerical simulations indicate that with proper preparation and precautions, imaging of the human brain at up to 14T could be performed safely, with advantages in SNR.
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