ArticleMagnetic resonance in medicine2021
In vivo 3D brain and extremity MRI at 50 mT using a permanent magnet Halbach array.
Article in Magnetic resonance in medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07037966 (Truly Portable MRI for Extremity and Brain Imaging Anywhere & Everywhere), which is not on this map. Cited by 70 papers.
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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.
Truly Portable MRI for Extremity and Brain Imaging Anywhere & Everywhere
Who cites it
70 citing papers in PubMed.
- Assessing the utility of low resolution brain imaging: treatment of infant hydrocephalus.NeuroImage. Clinical · 2021Trial
- Canine brain imaging with a new low-field portable (0.05 T) MRI scanner: a pilotThe veterinary quarterly · 2026Article
- Evaluation of a 0.05 T low-field MRI system for canine brain imaging via comparison with images acquired at 1.5 T field strength: a pilot cadaver study.The veterinary quarterly · 2026Article
- Advancing the Volumetric Analysis of Ultra-Low-Field Brain MRI Using Image-to-Image Translation.Magnetic resonance in medicine · 2026Article
- MRpro: Open Framework for Model-Based, Learned, and Quantitative MR Imaging-Application to Low-Field MRI.NMR in biomedicine · 2026Article
- Noise-Level Adaptive Diffusion Priors for Zero-Shot Low-Field MRI Quality Enhancement.NMR in biomedicine · 2026Article
- Time-Conditioned Zero-Shot Self-Supervised Reconstruction for Accelerated 3D Ultra-Low-Field MRI.Magnetic resonance in medicine · 2026Article
- Qualitative and quantitative hard-tissue MRI with portable Halbach scanners.Scientific reports · 2026Article
- Open-Source Multinuclear Low-Field Preclinical MRI Scanner.NMR in biomedicine · 2026Article
- In Vivo Imaging With a Low-Cost MRI Scanner and Cloud Data Processing in Low-Resource Settings.NMR in biomedicine · 2026Article
- A Low-Cost and Compact High-Frequency Gallium Nitride Gradient Power Amplifier for Low-Field MRI.Magnetic resonance in medicine · 2026Article
- A scoping review of portable ultra-low-field MRI studies in patients with acquired brain injury: Past, present, and future.Neuroimage. Reports · 2026Review
- Subject grounding to reduce electromagnetic interference for MRI scanners operating in unshielded environments.Magnetic resonance in medicine · 2026Article
- SynPoC: a high-quality generative diffusion model for transforming ultra-low-field point-of-care MRI using high-field MRI representations.Scientific reports · 2026Article
- Design and performance of a toroidal radiofrequency volume coil with intrinsic electromagnetic interference rejection for low-field portable Halbach-based MRI systems.Magnetic resonance in medicine · 2026Article
- Low-field and portable MRI technology: advancements and innovations.European radiology experimental · 2025Review
- MRI4ALL: A Week-Long Hackathon for the Development of an Open-Source Ultra-Low-Field MRI System.Journal of magnetic resonance imaging : JMRI · 2025Review
- Engineering the Colloidal Properties of Iron Oxide Nanoparticles for HighACS applied nano materials · 2025Article
- Magnetization transfer imaging using non-balanced SSFP at ultra-low field.Magnetic resonance in medicine · 2025Article
- Motion-corrected brain MRI at ultralow field (64 mT).Magnetic resonance in medicine · 2025Article
10 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo design a low-cost, portable permanent magnet-based MRI system capable of obtaining in vivo MR images within a reasonable scan time.
methodsA discretized Halbach permanent magnet array with a clear bore diameter of 27 cm was designed for operation at 50 mT. Custom-built gradient coils, RF coil, gradient amplifiers, and RF amplifier were integrated and tested on both phantoms and in vivo.
resultsPhantom results showed that the gradient nonlinearity in the y-direction and z-direction was less than 5% over a 15-cm FOV and did not need correcting. For the x-direction, it was significantly greater, but could be partially corrected in postprocessing. Three-dimensional in vivo scans of the brain of a healthy volunteer using a turbo spin-echo sequence were acquired at a spatial resolution of 4 × 4 × 4 mm in a time of about 2 minutes. The T
conclusionThis work has shown that it is possible to construct a low-field MRI unit with hardware components costing less than 10 000 Euros, which is able to acquire human images in vivo within a reasonable data-acquisition time. The system has a high degree of portability with magnet weight of approximately 75 kg, gradient and RF amplifiers each 15 kg, gradient coils 10 kg, and spectrometer 5 kg.
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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.