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Local shimming device and method for compensating non-uniformity of main magnetic field

A main magnetic field, local technology, applied in the direction of measurement device, magnetic resonance measurement, measurement of magnetic variables, etc., can solve the problems of magnetic field distortion and low cost, and achieve the effect of eliminating irregular shapes and good shimming effect.

Pending Publication Date: 2021-05-14
SIEMENS SHENZHEN MAGNETIC RESONANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The local shimming device according to the present invention is simple in structure and low in cost, can make the main magnetic field in the local area of ​​the inspection object more uniform, effectively solve the problem of magnetic field distortion in the local area and the resulting fat saturation, and then make the Higher image quality in localized areas

Method used

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  • Local shimming device and method for compensating non-uniformity of main magnetic field

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Embodiment Construction

[0033] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other solutions obtained by persons of ordinary skill in the art without making creative efforts shall belong to the protection scope of the present invention.

[0034] It should be noted that the terms "comprising" and "having" in the description and claims of the present invention and the above drawings, as well as any variations thereof, are intended to cover non-exclusive inclusion, for example, a product comprising a series of units or The equipment is not necessarily limited to those elemen...

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Abstract

The present invention relates to a local shimming device and a method of compensating for non-uniformity of a main magnetic field. The local shimming device comprises: a local coil arranged to cover a local area of an examination object to receive a magnetic resonance signal from the local area; a plurality of shim coils, wherein the plurality of shim coils are integrated in the local coil or arranged to surround at least a portion of the local coil; and a shim controller configured to control at least one shim coil of the plurality of shim coils according to an intensity distribution of the main magnetic field within the local region to provide a field distribution for compensating for a component of the main magnetic field within the local region.

Description

technical field [0001] The invention relates to a local shimming device and a method for compensating the inhomogeneity of the main magnetic field. Background technique [0002] Medical imaging is the technology and process of obtaining internal tissue images of the human body or a certain part of the human body in a non-invasive manner for the purpose of medical treatment or medical research. Medical diagnostic technology. Magnetic resonance imaging systems using medical imaging technology apply a magnetic field in the cylindrical measuring volume in which the patient is located, wherein in the basic magnetic field, in order to obtain magnetic resonance tomograms, i.e. images generated with the aid of magnetic resonance technology, in the internal region of the patient's body data, the patient's body needs to be exposed to a static main magnetic field that is as uniform as possible. This aligns the nuclear spins in the patient's body parallel to the direction of the basic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/34G01R33/387
CPCG01R33/34084G01R33/387G01R33/3875G01R33/5608G01R33/543
Inventor 王英伦陈艳丽岳振华赵武贻
Owner SIEMENS SHENZHEN MAGNETIC RESONANCE
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