ArticleMagnetic resonance in medicine2020
An orthogonal shim coil for 3T brain imaging.
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 11 papers.
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Who cites it
11 citing papers in PubMed.
- Improving magnetic field homogeneity in prostate MR imaging and spectroscopy using an add-on local external shim coil array.Magma (New York, N.Y.) · 2026Article
- Radiofrequency-transparent local BMagnetic resonance in medicine · 2025Article
- Article
- Advancements in MR hardware systems and magnetic field control: BPsychoradiology · 2024Review
- Balanced-force shim system for correcting magnetic-field inhomogeneities in the heart due to implanted cardioverter defibrillators.Frontiers in medicine · 2024Article
- Prediction of motion induced magnetic fields for human brain MRI at 3 T.Magma (New York, N.Y.) · 2023Article
- Physical limits to human brain B0 shimming with spherical harmonics, engineering implications thereof.Magma (New York, N.Y.) · 2022Article
- Recent Advances in Radio-Frequency Coil Technologies: Flexible, Wireless, and Integrated Coil Arrays.Journal of magnetic resonance imaging : JMRI · 2022Review
- A 31-channel integrated "AC/DC" BMagnetic resonance in medicine · 2022Article
- Distortion-free, high-isotropic-resolution diffusion MRI with gSlider BUDA-EPI and multicoil dynamic BMagnetic resonance in medicine · 2021Article
- Dynamic BMagnetic resonance in medicine · 2021Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
purposeWe designed and implemented an orthogonal shim array consisting of shim coils with their planes perpendicular to the planes of neighboring RF coils. This shim coil improves the magnetic field homogeneity by minimizing the interference to RF coils.
methodsUsing realistic off-resonance maps of the human brain, we first evaluated the performance of shim coils in different orientations. Based on simulations, we developed a 7-channel orthogonal shim array, whose coil plan was perpendicular to neighboring RF coils, at the forehead. A programmable open-source current driver supplied shim currents.
resultsThe 7-channel orthogonal shim array caused only marginal SNR loss to the integrated 32-channel RF-shim array. The 7-channel orthogonal shim array itself improved the magnetic field homogeneity by 30% in slice-optimized shimming, comparable to the baseline shimming offered by the scanner's 2nd order spherical harmonic shimming.
conclusionOrthogonal shim coils can improve the field homogeneity while maintaining high image SNR.
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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.