Designing an Efficient Resistive Magnet for Magnetic Resonance Imaging

Lopez, Hector Sanchez; Salmon, Carlos Ernesto Garrido; Mirabal, Carlos Cabal; Saint‐Jalmes, Hervé

doi:10.1109/tmag.2004.833176

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…Its maximum is below 10 4. The ratio Br/Bz over the circular ROI with radius 9 cm for the solution presented in [14] Summarizing, we have shown that indeed, if high quality homogeneous magnetic field is obtained then one may neglect the radial component in the design process and this has no practical effect on the magnitude of the magnetic field. The problem when homogeneous field has to be generated in the direction which is not perpendicular to coils planes is studied later in the paper.…”

Section: A Homogeneous Magnetic Fieldmentioning

confidence: 76%

“…Fig. 3 presents the radial and axial components of magnetic field at the border of the ROI for the solution proposed in [14] (compare Table II of [14]). The B z component of the magnetic field is at the homogeneity level of 21 ppm.…”

Section: A Homogeneous Magnetic Fieldmentioning

confidence: 99%

“…Fig.3. The axial component Bz and the radial component Br of the magnetic field over the circular ROI with radius 9 cm for the solution presented in[14] …”

mentioning

confidence: 99%

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Synthesis of the Magnetic Field Using Transversal 3D Coil System

Garda¹,

Galias²

2015

International Journal of Electronics and Telecommunications

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Magnetic field is usually generated using magnets realized as a set of simple coils. In general, those magnets generate magnetic field with nonzero components in all directions. Usually during the design process only one component of the magnetic field is taken into account, and in the optimisation procedure the currents and positions of simple coils are found to minimize the error between the axial component of the magnetic field and the required magnetic field in the ROI. In this work, it is shown that if the high quality homogeneous magnetic field is generated then indeed one may neglect non-axial components. On the other hand, if the obtained magnetic field is not homogeneous either due to design requirements of too restrictive constrains, then all other components may severely deteriorate the quality of the magnetic field. In the second part of the paper, we show how to design a 3D transversal coil system to solve problems which are intractable in the 1D case.

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Section: A Homogeneous Magnetic Fieldmentioning

confidence: 76%

Section: A Homogeneous Magnetic Fieldmentioning

confidence: 99%