Keywords: Magnets (B0), Magnets (B0)
Motivation: Existing low-field magnet designs are too heavy. They often have small usable imaging regions and inconvenient bore diameters.
Goal(s): To design a compact, lightweight, and portable low-field magnet system with a large usable imaging region and a small length-to-bore aspect ratio.
Approach: Our approach includes data-driven higher-order Halbach-based shim design. We also employed Mu-metal to enhance the shimming. We further improved the homogeneity by discretizing the multilayered Halbach into segments. We used COMSOL multiphysics for simulation.
Results: In COMSOL-based magnetostatic simulation, we achieved a compact, lightweight magnet design with an imaging region spanning over half the magnet's bore.
Impact: The improvement of the low-field MRI design with a lightweight and inexpensive magnet system with a potential benefit in resource-constrained and point-of-care settings.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords