ArticleConcepts in magnetic resonance. Part B, Magnetic resonance engineering2020
The "Loopole" Antenna: A Hybrid Coil Combining Loop and Electric Dipole Properties for Ultra-High-Field MRI.
Article in Concepts in magnetic resonance. Part B, Magnetic resonance engineering, 2020. 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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Who cites it
18 citing papers in PubMed.
- Enhanced Transmit Efficiency of a Loop Array Combined With Out-of-Phase Passive Dipoles for Thoracic Spinal Cord MRI at 7T.Magnetic resonance in medicine · 2026Article
- Design of an 8-Channel Transmit 32-Channel Receive 11.7T Head Coil and Evaluation of SNR Gains.Magnetic resonance in medicine · 2026Article
- Computational Design of a Thermal Applicator for Brain Hyperthermia Controlled by Capacitor Positioning in Loop Coils.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2025Article
- Multi-center QA of ultrahigh-field systems.Magma (New York, N.Y.) · 2025Review
- Simultaneous whole-brain and cervical spine imaging at 7 T using a neurovascular head and neck coil with 8-channel transceiver array and 56-channel receiver array.Magnetic resonance in medicine · 2025Article
- 500 MHz Inductive Birdcage RF Coil for Brain MRI: Design, Implementation and Validation.IEEE transactions on bio-medical engineering · 2025Article
- Reproducibility of Electromagnetic Field Simulations of Local Radiofrequency Transmit Elements Tailored for 7 T MRI.Sensors (Basel, Switzerland) · 2025Article
- RF coil design strategies for improving SNR at the ultrahigh magnetic field of 10.5T.Magnetic resonance in medicine · 2025Article
- Performance of receive head arrays versus ultimate intrinsic SNR at 7 T and 10.5 T.Magnetic resonance in medicine · 2024Article
- Helmet Radio Frequency Phased Array Applicators Enhance Thermal Magnetic Resonance of Brain Tumors.Bioengineering (Basel, Switzerland) · 2024Article
- A 32-Channel Sleeve Antenna Receiver Array for Human Head MRI Applications at 10.5 T.IEEE transactions on medical imaging · 2023Article
- Improving Specific Absorption Rate Efficiency and Coil Robustness of Self-Decoupled Transmit/Receive Coils by Elevating Feed and Mode Conductors.Sensors (Basel, Switzerland) · 2023Article
- Hairpin RF resonators for MR imaging transceiver arrays with high inter-channel isolation and BJournal of magnetic resonance (San Diego, Calif. : 1997) · 2022Article
- Study on the Effect of Non-Symmetrical Current Distribution Controlled by Capacitor Placement in Radio-Frequency Coils for 7T MRI.Biosensors · 2022Article
- Bench to bore ramifications of inter-subject head differences on RF shimming and specific absorption rates at 7T.Magnetic resonance imaging · 2022Article
- A Monopole and Dipole Hybrid Antenna Array for Human Brain Imaging at 10.5 Tesla.IEEE antennas and wireless propagation letters · 2022Article
- Insertable inductively coupled volumetric coils for MR microscopy in a human 7T MR system.Magnetic resonance in medicine · 2022Article
- A 16-Channel Dipole Antenna Array for Human Head Magnetic Resonance Imaging at 10.5 Tesla.Sensors (Basel, Switzerland) · 2021Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
purposeTo revisit the "loopole," an unusual coil topology whose unbalanced current distribution captures both loop and electric dipole properties, which can be advantageous in ultra-high-field MRI.
methodsLoopole coils were built by deliberately breaking the capacitor symmetry of traditional loop coils. The corresponding current distribution, transmit efficiency, and signal-to-noise ratio (SNR) were evaluated in simulation and experiments in comparison to those of loops and electric dipoles at 7 T (297 MHz).
resultsThe loopole coil exhibited a hybrid current pattern, comprising features of both loops and electric dipole current patterns. Depending on the orientation relative to B
conclusionThe loopole can achieve high performance by supporting both divergence-free and curl-free current patterns, which are both significant contributors to the ultimate intrinsic performance at ultra-high field. While electric dipoles exhibit similar hybrid properties, loopoles maintain the engineering advantages of loops, such as geometric decoupling and reduced resonance frequency dependence on sample loading.
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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.