Patent ID: 11875937
Assignee: EPSITAU LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  A  G | IPC A  G  H

Claim 11:
12. A method for producing a magnet array for use in a brain Magnetic Resonance Imaging (MRI) system, the method comprising:
positioning multiple magnet elements, which are made of a permanent magnet material, and which are dispersed around a longitudinal axis passing through a predefined imaging volume of the MRI system, wherein a group of at least some of the magnet elements encircle the imaging volume, wherein the magnet elements are divided into (i) a first assembly characterized by a first minimal inner radius that is smallest among distances between the magnet elements of the first assembly and the longitudinal axis, and (ii) a second assembly positioned on a first side of the imaging volume and alongside the first assembly along the longitudinal axis and characterized by a second minimal inner radius that is smallest among the distances between the magnet elements of the second assembly and the longitudinal axis, wherein the first minimal inner radius of the first assembly is larger than the second minimal inner radius of the second assembly, wherein a center of the imaging volume is located outside the second assembly, and wherein at least one of the magnet elements in the first assembly is located on a second side of the imaging volume, the magnet elements configured to jointly generate a magnetic field of at least a given level of uniformity inside the imaging volume; and
fixedly holding the multiple magnet elements in place using a frame.