ReviewMagma (New York, N.Y.)2023
Specific absorption rate (SAR) simulations for low-field (< 0.1 T) MRI systems.
Review in Magma (New York, N.Y.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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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
8 citing papers in PubMed, 13 citations in OpenAlex.
- A Modified Balanced Steady State Free Precession Sequence for Overhauser Magnetic Resonance Imaging.Magnetic resonance in medicine · 2026Article
- MRI and Implant Safety at Low-Field and Ultralow-Field Strengths.Journal of magnetic resonance imaging : JMRI · 2026Review
- A review of potential health risks of radiofrequency electromagnetic field exposure from mobile phones and base stations in children and pregnant women.Frontiers in public health · 2026Review
- Frequency-Encoded Magnetic Resonance Imaging with Dynamic Radio Frequency Field Gradients.Communications physics · 2026Article
- Characterization of Portable Ultra-Low Field MRI Scanners for Multi-Center Structural Neuroimaging.Human brain mapping · 2025Article
- Signal-to-noise trade-offs between magnet diameter and shield-to-coil distance for cylindrical Halbach-based portable MRI systems for neuroimaging.Magma (New York, N.Y.) · 2025Article
- Linear Bloch-Siegert phase-encoded low-field MRI: RF coils, pulse sequence, and image reconstruction.NMR in biomedicine · 2024Article
- Exploring the foothills: benefits below 1 Tesla?Magma (New York, N.Y.) · 2023Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo simulate the magnetic and electric fields produced by RF coil geometries commonly used at low field. Based on these simulations, the specific absorption rate (SAR) efficiency can be derived to ensure safe operation even when using short RF pulses and high duty cycles.
methodsElectromagnetic simulations were performed at four different field strengths between 0.05 and 0.1 T, corresponding to the lower and upper limits of current point-of-care (POC) neuroimaging systems. Transmit magnetic and electric fields, as well as transmit efficiency and SAR efficiency were simulated. The effects of a close-fitting shield on the EM fields were also assessed. SAR calculations were performed as a function of RF pulse length in turbo-spin echo (TSE) sequences.
resultsSimulations of RF coil characteristics and B
conclusionThis work presents a comprehensive overview of the transmit and SAR efficiencies for RF coils used for POC MRI neuroimaging. While SAR is not a problem for conventional sequences, the values derived here should be useful for RF intensive sequences such as T
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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.