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Magnetic resonance imaging equipment capable of reducing vibration noises of gradient coil

A technology of magnetic resonance imaging and gradient coils, applied in the direction of measuring magnetic variables, measuring devices, instruments, etc., can solve the problems of insufficient image quality, high decibel noise, etc., and achieve the effects of low cost, noise reduction and impact reduction

Inactive Publication Date: 2013-04-03
NINGBO JANSEN MECHANISM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rapid switching of the current in the gradient scan sequence causes the gradient coil to vibrate, resulting in unclear image quality and high decibel noise

Method used

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  • Magnetic resonance imaging equipment capable of reducing vibration noises of gradient coil
  • Magnetic resonance imaging equipment capable of reducing vibration noises of gradient coil
  • Magnetic resonance imaging equipment capable of reducing vibration noises of gradient coil

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with accompanying drawing:

[0050] Such as Figure 17 , Figure 18 , a magnetic resonance imaging device for reducing vibration noise of gradient coils, including a superconducting magnet assembly 1 and a gradient coil assembly 2, and also includes a damping layer 3, the damping layer 3 is arranged between the superconducting magnet assembly 1 and the gradient coil assembly 2 between.

[0051] The damping layer 3 is cylindrical. The damping layer 3 is composed of a plurality of damping tubes 4 . The damping layer 3 is composed of at least one damping tube 4 in the form of a threaded arrangement. The damping tube 4 is a hollow tube. The damping tube 4 is made of silica gel. Compressed air is sealed in the damping tube 4 . Or the damping tube 4 is sealed with pressure liquid.

[0052] The magnetic resonance imaging equipment for reducing vibration noise of gradient coils of the present invention...

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Abstract

The invention provides magnetic resonance imaging equipment capable of reducing vibration noises of a gradient coil. The magnetic resonance imaging equipment comprises a superconducting magnet assembly (1) and a gradient coil assembly (2), and is characterized by further comprising a damping layer (3); and the damping layer (3) is arranged between the superconducting magnet assembly (1) and the gradient coil assembly (2). According to the magnetic resonance imaging equipment capable of reducing the vibration noises of the gradient coil provided by the invention, damp of a medium between a superconducting magnet and the gradient coil is improved, so that the noises caused by the gradient coil can be obviously reduced. The magnetic resonance imaging equipment has the specific advantages in that the noises of the magnetic resonance imaging equipment in scanning and imaging processes can be reduced; the influence of the noises on a scanning target can be reduced; and the tension feeling of the scanning target can be released. The vibration of the magnetic resonance imaging equipment in the scanning and imaging processes can be reduced; and the influence of vibration on the imaging quality can be reduced. The magnetic resonance imaging equipment has the application advantages of low implementation cost, and simplicity and easiness in operation.

Description

technical field [0001] The invention relates to the field of magnetic resonance imaging, in particular to a magnetic resonance imaging device for reducing vibration noise of gradient coils. Background technique [0002] Magnetic resonance imaging (MRI) scanners are commonly used in clinical research and medical diagnosis. Magnetic field strengths of up to 3 Tesla are common, allowing high-resolution imaging using fast scan sequences. However, as the magnetic field strength increases, the acoustic noise generated during scanning also increases. The rapid switching of currents in the scan sequence vibrates the gradient coils, which can lead to poor image quality and high decibel noise. [0003] Price etc. [1] An overview of the acoustic noise of a commercial MRI system is given for varying field strengths from 0.2 Tesla to 3 Tesla. Noise levels varied with field strength from 85dB for a 0.2 - 0.5 Tesla system to 115dB for a 3T system when using a fast scan sequence, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/385
Inventor 赵华炜
Owner NINGBO JANSEN MECHANISM CORP
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