Equivalent-charge-based optimization of spokes-and-hub permanent magnets for hand-held MR imaging
Author(s)Kuang, Irene A.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science.
Jacob K. White.
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The complex infrastructure needed for high-field magnetic resonance (MR) scanners has relegated this very safe, and remarkably revealing, clinical tool to high-end hospital care. But for many potential applications of MR -- point-of-care diagnostics, routine screening or classroom experimentation -- image quality is far less critical than portability and low cost. Emphasizing cost and portability over image quality has led researchers to focus on low-field MR, of the order of tens to hundreds of millitesla, generated using arrays of inexpensive permanent magnets. In this thesis, I describe a method for differentiating the potential from end-cap equivalent charges to efficiently compute the fields from bar magnets in a hundred- bar spokes-and-hub permanent magnet topology and demonstrate its potential as a low-cost MR imager.
Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, May, 2020Cataloged from the official PDF of thesis.Includes bibliographical references (pages 45-48).
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology
Electrical Engineering and Computer Science.