Shimming sheet and shimming bar used for magnet, magnet and magnetic-resonance system

A technology of shims and shims, applied in the field of magnets and magnetic resonance systems, can solve problems such as time-consuming and energy-consuming

Inactive Publication Date: 2014-04-09
SIEMENS SHENZHEN MAGNETIC RESONANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is a very time an

Method used

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  • Shimming sheet and shimming bar used for magnet, magnet and magnetic-resonance system
  • Shimming sheet and shimming bar used for magnet, magnet and magnetic-resonance system
  • Shimming sheet and shimming bar used for magnet, magnet and magnetic-resonance system

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Example Embodiment

[0033] Several embodiments of the shim used in the magnetic resonance system according to the present invention will be described below with reference to the accompanying drawings.

[0034] Fig. 3(a) shows a perspective view of a first embodiment of a shim for a magnetic resonance system according to the present invention. As shown in Fig. 3(a), the shim 1 for a magnetic resonance system according to the first embodiment of the present invention includes a frame 11 and one or more magnetic sheets 12, and the frame 11 is used to fix the magnetic sheets 12 . This fixing method can be realized by, for example, the following structure. The frame 11 is arranged around the magnetic sheet 12, and the outer wall of the magnetic sheet 12 contacts the inner wall 22 of the frame 11 so that the inner wall 22 of the frame 11 surrounds the magnetic sheet 12. In this first embodiment, the shape of the frame 11 is formed in a circle, and the inner wall 22 of the frame 11 is also a circle. The ...

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Abstract

The invention relates to a shimming sheet and a shimming bar used for a magnet, the magnet and a magnetic-resonance system. The shimming sheet (1) includes a frame body (11) and one or more magnetic sheets (12). The frame body (11) is used for fixing the magnetic sheets (12). The shimming sheet used for the magnetic-resonance system is capable of overcoming problems of complex operations and susceptibility to errors, which are caused by different specifications of the magnetic sheets when applied to the shimming bar.

Description

technical field [0001] The present invention relates to a magnetic resonance system, and more particularly, the present invention relates to a shim for a magnet, a shim strip for a magnet, a magnet and a magnetic resonance system. Background technique [0002] In the existing magnetic resonance system, a superconducting magnet can be used to generate a magnetic field, and then the magnetic field can be used for magnetic resonance imaging. Superconducting magnets usually have a ring-shaped columnar structure. Due to the distance from the center of the superconducting magnet, the magnetic field strength in different regions is usually different. Therefore, it is necessary to take certain measures to correct the uniformity of the magnetic field in different regions, so that Obtain magnetic resonance images with better imaging quality. [0003] In the prior art, a method of passive shimming is usually used to make the magnetic field have better uniformity. figure 1 It is a cro...

Claims

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Application Information

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IPC IPC(8): G01R33/3873
Inventor 匡斌何金强
Owner SIEMENS SHENZHEN MAGNETIC RESONANCE
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