Magnetic shielding for MRI superconducting magnets

Atsushi Ishiyama, H. Hirooka

    Research output: Contribution to journalArticle

    23 Citations (Scopus)

    Abstract

    An optimal design is presented of a highly homogeneous superconducting coil system with magnetic shielding for magnetic resonance imaging (MRI). The optimal design method is a combination of the hybrid finite-element and boundary-element method for analysis of an axially symmetric nonlinear open-boundary magnetic field problem and a mathematical programming method for solving the corresponding optimization problem. The multiobjective goal programming method and the nonlinear least-squares method are adopted. The optimal design results of 1.5- and 4.7-T-magnet systems with different types of magnetic shielding for whole-body imaging are compared, and the advantages of a combination of active and yoke shields are shown.

    Original languageEnglish
    Pages (from-to)1692-1695
    Number of pages4
    JournalIEEE Transactions on Magnetics
    Volume27
    Issue number2 pt III
    DOIs
    Publication statusPublished - 1991 Mar

    Fingerprint

    Magnetic shielding
    magnetic shielding
    Superconducting magnets
    superconducting magnets
    Magnetic resonance
    magnetic resonance
    Imaging techniques
    mathematical programming
    Mathematical programming
    boundary element method
    least squares method
    Boundary element method
    programming
    Magnets
    magnets
    coils
    Magnetic fields
    optimization
    magnetic fields
    Optimal design

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Physics and Astronomy (miscellaneous)

    Cite this

    Magnetic shielding for MRI superconducting magnets. / Ishiyama, Atsushi; Hirooka, H.

    In: IEEE Transactions on Magnetics, Vol. 27, No. 2 pt III, 03.1991, p. 1692-1695.

    Research output: Contribution to journalArticle

    Ishiyama, Atsushi ; Hirooka, H. / Magnetic shielding for MRI superconducting magnets. In: IEEE Transactions on Magnetics. 1991 ; Vol. 27, No. 2 pt III. pp. 1692-1695.
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