Slug-Mapper: Magnetic Scanner for Ultra Low-Field MRI Scanners
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arXiv
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908343744856064 |
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| author | Morris, Jonathan W. |
| author_facet | Morris, Jonathan W. |
| contents | Ultra-Low Field (ULF) MRI scanners offer a portable and cost-effective alternative to conventional MRI systems, but require careful calibration to compensate for reduced magnetic field strength and signal quality. In this paper, we present Slug-Mapper, a low-cost, open-source magnetic field scanner designed to map the static field $B_0$ voxel-by-voxel within the bore of a ULF MRI system. Built using a repurposed 3D printer, a Raspberry Pi, and off-the-shelf components, Slug-Mapper enables high-resolution magnetic field characterization for both passive and active shimming. We provide a detailed overview of MRI physics, the engineering challenges of ULF systems, and the architecture and operation of Slug-Mapper. This tool bridges the gap between hardware prototyping and precise system calibration, supporting the development of accessible and portable MRI technology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_21193 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Slug-Mapper: Magnetic Scanner for Ultra Low-Field MRI Scanners Morris, Jonathan W. Medical Physics Ultra-Low Field (ULF) MRI scanners offer a portable and cost-effective alternative to conventional MRI systems, but require careful calibration to compensate for reduced magnetic field strength and signal quality. In this paper, we present Slug-Mapper, a low-cost, open-source magnetic field scanner designed to map the static field $B_0$ voxel-by-voxel within the bore of a ULF MRI system. Built using a repurposed 3D printer, a Raspberry Pi, and off-the-shelf components, Slug-Mapper enables high-resolution magnetic field characterization for both passive and active shimming. We provide a detailed overview of MRI physics, the engineering challenges of ULF systems, and the architecture and operation of Slug-Mapper. This tool bridges the gap between hardware prototyping and precise system calibration, supporting the development of accessible and portable MRI technology. |
| title | Slug-Mapper: Magnetic Scanner for Ultra Low-Field MRI Scanners |
| topic | Medical Physics |
| url | https://arxiv.org/abs/2504.21193 |