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1. (WO2018198120) A SYSTEM FOR REDUCTION OF A MAGNETIC FRINGE FIELD OF A MAGNETIC RESONANCE IMAGING DEVICE

Pub. No.:    WO/2018/198120    International Application No.:    PCT/IL2018/050460
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 27 01:59:59 CEST 2018
IPC: G01R 33/42
G01R 33/00
Applicants: ASPECT IMAGING LTD.
Inventors: RAPOPORT, Uri
COHEN, Yoram
GOLDFARB, Yair
Title: A SYSTEM FOR REDUCTION OF A MAGNETIC FRINGE FIELD OF A MAGNETIC RESONANCE IMAGING DEVICE
Abstract:
A magnetic resonance imaging (MRI) system is provided. The MRI system can include a magnetic field device to generate a magnetic field within a measurement volume and to generate a magnetic fringe field external to the measurement volume. The MRI system can include a ferromagnetic housing to envelop the magnetic field device. The housing can have a first portion and a second portion, where thickness of the first portion is different from thickness of the second portion. The MRI system can include a plate having a plate opening and positioned external to the housing at a predetermined distance from the housing. In some embodiments, the magnetic fringe field generated by the MRI system can be asymmetric with respect to a center of the measurement volume.