Gradient coil with parallel structure

A gradient coil and coil technology, applied in magnetic resonance measurement, measurement devices, instruments, etc., can solve the problems of high manufacturing cost and low reliability of gradient coils, improve image quality, reduce design and manufacturing difficulty, and reduce costs. Effect

Active Publication Date: 2021-06-22
NINGBO JANSEN NMR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a gradient coil with a parallel structure, which can effectively solve the problems of high manufacturing cost and low reliability of the existing gradient coils

Method used

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  • Gradient coil with parallel structure
  • Gradient coil with parallel structure
  • Gradient coil with parallel structure

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Embodiment Construction

[0032] In order to make the above objects, features, and advantages of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] The specific details are set forth in the following description to fully understand the invention. However, the present invention can be implemented in a variety of other means described herein, and those skilled in the art can do a similar promotion without violating the connotation of the present invention. The present invention therefore is not limited by the specific embodiments disclosed below.

[0034] Please refer to Figure 1 ~ 5 , figure 1 A cross-sectional level of the gradient coil; figure 2 A longitudinal sectional position of the gradient coil; image 3 Schematic diagram of the structure of the first shield coil; Figure 4 Schematic structural diagram of the third shield coil; Figure 5 A schematic diagram of a drive circuit for a gradient coil...

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Abstract

The invention discloses a gradient coil with a parallel structure, which comprises three sets of coils and two power amplifiers, each set of coil comprises two groups of main coils with a parallel structure and two groups of shielding coils with a parallel structure, one group of main coils with a parallel structure and one group of shielding coils with a parallel structure are driven by one channel of one power amplifier, and the other group of the main coil of the parallel structure and the shielding coil of the parallel structure are driven by one channel of the other power amplifier. The gradient coil provided by the invention adopts a parallel structure, has the advantage of low hot-spot temperature, can reduce the design and manufacturing difficulty of a cooling pipeline, has higher gradient linearity, and can improve the image quality; in addition, two conventional power amplifiers are adopted to drive the coil at the same time, the performance requirement for a driving power supply is lowered, the reliability of the magnetic resonance imaging system is improved, and the cost of the system is lowered.

Description

Technical field [0001] The present invention relates to the field of magnetic resonance imaging, and more particularly to a gradient coil of a parallel structure. Background technique [0002] With the development of magnetic resonance imaging technology, the pursuit of higher image resolution and faster scanning speed, this is a higher requirement for the performance of the gradient coil. [0003] High performance gradient coils can produce higher gradient strength and have a faster switching rate. The gradient strength can be increased by increasing the number of turns of the coil or increase the coil current, and the faster switching rate requires a lower inductor. [0004] However, due to the limitation of spatial size, only a plurality of turns can be arranged in a limited space. Moreover, the increase in turns will result in an increase in inductance, which puts higher requirements for power amplifiers. Increasing the current of the coil will bring more serious fever proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/385G01R33/34
CPCG01R33/34053G01R33/3858
Inventor 李兰凯何群李国超陈仕兵刘照泉
Owner NINGBO JANSEN NMR TECH CO LTD
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