Shield-Free MRI System Of Time-Varying Electromagnetic Fields In Complex Electromagnetic Environments
AssigneeZepp Europe Holding B.V.
InventorsJinghua Wang, Kongqiao Wang, Li Guo
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a method and a system for minimizing electromagnetic interference (EMI) of magnetic resonance imaging (MRI) systems in complex electromagnetic environments. The method and system described herein provide superior MRI image quality and may reduce costs by eliminating the requirement of expensive shielding in MRI systems/hybrid MRI systems.
Claims20
An MRI system for minimizing EMI in an image acquired by the MRI system comprising:
- a magnet;
- one or more RF gradient coils;
- one or more MM signal receiving coils;
- one or more EMI detectors located inside an imaging volume, the one or more EMI detectors including electrically conductive coils adjacent to at least one of the RF gradient coils or the Mill signal receiving coils;
- and
- a computing device configured to execute instructions to:
- acquire a plurality of k-space data by the one or more MRI signal receiving coils using one or more MRI sequences;
- simultaneously acquire EMI data from the one or more EMI detectors corresponding to each of the plurality of k-space data;
- minimize the effect of EMI on the k-space data of the image by reducing the EMI data from the k-space data using an MRI physics-based model to provide corrected k-space data;
- reconstruct the image from the corrected k-space data;
- and
- obtain the image with minimized EMI.
A method for minimizing electromagnetic interference (EMI) in an image acquired by a MRI system at a static magnetic field, the MRI system including one or more gradient coils, one or more MRI signal receiving coils, and one or more EMI detectors located inside an imaging volume, the one or more EMI detectors including electrically conductive coils adjacent to at least one of the gradient coils or the MRI signal receiving coils, the method comprising:
- acquiring a plurality of k-space data of the subject by the one or more MRI signal receiver coils using one or more Mill sequences;
- simultaneously acquiring EMI data by the one or more EMI detectors corresponding to each of the plurality of k-space data;
- minimizing the effect of EMI on the k-space data by reducing the EMI data from the k-space data using an MRI physics-based model to provide corrected k-space data;
- reconstructing the image from the corrected k-space data;
- and
- obtaining the image with minimized EMI.
Dependencies are inferred from the claim text.