A Gradient Coil with Parallel Structure

A technology of gradient coils and coils, which is applied to the measurement of magnetic variables, instruments, measuring devices, etc., can solve the problems of low reliability and high manufacturing cost of gradient coils, reduce the difficulty of design and manufacturing, improve image quality, and achieve high gradient linearity. Effect

Active Publication Date: 2021-09-03
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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  • A Gradient Coil with Parallel Structure
  • A Gradient Coil with Parallel Structure
  • A 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 more comprehensible, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described here, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Accordingly, the present invention is not limited to the specific embodiments disclosed below.

[0034] Please refer to Figure 1~Figure 5 , figure 1 is a schematic diagram of the cross-section level of the gradient coil; figure 2 is a schematic diagram of the longitudinal section position of the gradient coil; image 3 is a schematic structural diagram of the first shi...

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Abstract

The invention discloses a gradient coil with a parallel structure, which includes: three sets of coils and two power amplifiers, each set of coils includes two sets of main coils with a parallel structure and two sets of shielding coils with a parallel structure, and one set of parallel structures The main coil and the shielding coil of the parallel structure are driven by a channel of a power amplifier, and the main coil of another group of parallel structure and the shielding coil of the parallel structure are driven by a channel of another power amplifier. The gradient coil provided by the present invention adopts a parallel structure, which has the advantage of low hot spot temperature, can reduce the difficulty of designing and manufacturing the cooling pipeline, and has higher gradient linearity, which can improve image quality; in addition, by using two conventional The power amplifier drives the coils at the same time, which reduces the performance requirements of the driving power supply, improves the reliability of the magnetic resonance imaging system, and reduces the system cost.

Description

technical field [0001] The invention relates to the field of magnetic resonance imaging, in particular to a gradient coil with a parallel structure. Background technique [0002] With the development of magnetic resonance imaging technology, the pursuit of higher image resolution and faster scanning speed puts forward higher requirements for the performance of gradient coils. [0003] High-performance gradient coils must be able to generate higher gradient strengths and have faster switching rates. The gradient strength can be increased by increasing the number of turns of the coil or by increasing the coil current. Faster switching rates require the gradient coil to have lower inductance. [0004] However, due to the limitation of the space size, only a certain number of turns of the current-carrying wires can be arranged in the limited space. Moreover, the increase in the number of turns will lead to an increase in inductance, which puts forward higher requirements on th...

Claims

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Application Information

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Patent Type & Authority Patents(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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