ArticleMagnetic resonance in medicine2020
Introduction of the snake antenna array: Geometry optimization of a sinusoidal dipole antenna for 10.5T body imaging with lower peak SAR.
Article in Magnetic resonance in medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- Modular Metamaterials for Adaptable MRI Signal Control: Combining Dipole Array With a New Hexagon-Based Artificial Dielectrics.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- A shielded 32-channel body transceiver array with integrated electronics for 7 T.Magnetic resonance in medicine · 2025Article
- An evaluation of the coax monopole antenna as a transmit array element for head imaging at 14 T.Magnetic resonance in medicine · 2025Article
- Discretely Dielectric-Material Coated Dipole Antenna: Enhanced Tuning and Electric Field Reduction for Safety at 300 MHz.Proceedings of the International Society for Magnetic Resonance in Medicine ... Scientific Meeting and Exhibition. International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition · 2025Article
- Towards Large Diameter Transmit Coils for 7-T Head Imaging: A Detailed Comparison of a Set of Transmit Element Design Concepts.NMR in biomedicine · 2025Article
- 3D Metamaterials Facilitate Human Cardiac MRI at 21.0 Tesla: A Proof-of-Concept Study.Sensors (Basel, Switzerland) · 2025Article
- A Metamaterial-like Structure Design Using Non-uniformly Distributed Dielectric and Conducting Strips to Boost the RF Field Distribution in 7 T MRI.Sensors (Basel, Switzerland) · 2024Article
- Germany's journey toward 14 Tesla human magnetic resonance.Magma (New York, N.Y.) · 2023Review
- Novel materials in magnetic resonance imaging: high permittivity ceramics, metamaterials, metasurfaces and artificial dielectrics.Magma (New York, N.Y.) · 2022Review
- A Monopole and Dipole Hybrid Antenna Array for Human Brain Imaging at 10.5 Tesla.IEEE antennas and wireless propagation letters · 2022Article
- Ultra-high-field MR in Prostate cancer: Feasibility and Potential.Magma (New York, N.Y.) · 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
- The Coax Dipole: A fully flexible coaxial cable dipole antenna with flattened current distribution for body imaging at 7 Tesla.Magnetic resonance in medicine · 2022Article
- A local multi-transmit coil combined with a high-density receive array for cerebellar fMRI at 7 T.NMR in biomedicine · 2021Article
- A 16-Channel Dipole Antenna Array for Human Head Magnetic Resonance Imaging at 10.5 Tesla.Sensors (Basel, Switzerland) · 2021Article
- Comparison of 16-Channel Asymmetric Sleeve Antenna and Dipole Antenna Transceiver Arrays at 10.5 Tesla MRI.IEEE transactions on medical imaging · 2021Article
- On the way to routine cardiac MRI at 7 Tesla - a pilot study on consecutive 84 examinations.PloS one · 2021Article
- Improving radiofrequency power and specific absorption rate management with bumped transmit elements in ultra-high field MRI.Magnetic resonance in medicine · 2020Article
- 10.5 T MRI static field effects on human cognitive, vestibular, and physiological function.Magnetic resonance imaging · 2020Article
- 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
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Authors and funding
10 authors.
Funding
Abstract
purposeTo improve imaging performance for body MRI with a local transmit array at 10.5T, the geometry of a dipole antenna was optimized to achieve lower peak specific absorption rate (SAR) levels and a more uniform transmit profile.
methodsElectromagnetic simulations on a phantom were used to evaluate the SAR and
resultsSimulation results on a phantom indicate a lower SAR and a higher transmit efficiency for the snake antenna compared to the fractionated dipole array. Similar results are found on a human body model: when comparing the trade-off between uniformity and peak SAR, the snake antenna performs better for all imaging targets. Simulations and measurements are in good agreement. Preliminary imaging result were acquired in 2 volunteers with the 12-channel snake antenna array.
conclusionBy optimizing the geometry of a dipole antenna, peak SAR levels were lowered while achieving a more uniform transmit field as demonstrated in simulations on a phantom and a human body model. The array was constructed, validated, and successfully used to image 2 individuals at 10.5T.
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