Method of improving multichannel radio frequency coil performances

A radio frequency coil and multi-channel technology, which is applied in coils, magnetic resonance measurement, instruments, etc., can solve the problems of reducing multi-channel coil coupling and performance degradation of multi-channel radio frequency coils, so as to improve image quality, signal-to-noise ratio and image quality. Resolution, performance-enhancing effects

Active Publication Date: 2016-05-11
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the technical problems existing in the prior art, the present invention provides a method for improving the performance of multi-channel radio frequency coils, reduces the coupling between multi-channel coils, and solves the problem of performance degradation of multi-channel radio frequency coils using magnetic metamaterials, thereby Improving MRI Quality and Resolution

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  • Method of improving multichannel radio frequency coil performances
  • Method of improving multichannel radio frequency coil performances
  • Method of improving multichannel radio frequency coil performances

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Embodiment Construction

[0023] In order to better illustrate the technical characteristics and structure of the present invention, the following is a detailed description in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0024] refer to figure 1 , a method for improving the performance of a multi-channel radio frequency coil comprising the steps of:

[0025] (S1) Before the magnetic resonance scan, the magnetic metamaterial is added to the multi-channel radio frequency coil; the multi-channel coil means that one coil has multiple channels to receive signals respectively. For example: 8-channel RF coil, which contains 8 channels, which can be used to receive signals respectively.

[0026] (S2) Acquiring a noise image of each channel in the multi-channel radio frequency coil on the magnetic resonance imaging system without radio frequency transmission power.

[0027] (S3) calculating the noise coupling matrix of the multi-channel radio frequency coil afte...

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Abstract

Provided is a method of improving multichannel radio frequency coil performances, comprising the steps of: before magnetic resonance scanning, adding a magnetic meta-material into a multichannel radio frequency coil; under the condition of no radio frequency emission power, collecting the noise of each channel in the multichannel radio frequency coil; calculating the noise coupling matrix of the multichannel radio frequency coil after adding the magnetic meta-material; and in an image reconstruction process, employing the noise coupling matrix to compensate for the coupling of the multichannel radio frequency coil. The method collects the noise of each channel of the multichannel radio frequency coil, calculates the noise coupling matrix thereof, and employs the noise coupling matrix to compensate for the coupling deterioration of the multichannel radio frequency coil in image reconstruction, thereby improving multichannel radio frequency coil performances when the magnetic meta-material is added into the multichannel radio frequency coil, increasing an image signal to noise ratio and a resolution ratio, and improving image quality.

Description

technical field [0001] The invention relates to magnetic resonance imaging, in particular to a method for improving the performance of a multi-channel radio frequency coil. Background technique [0002] The performance of metamaterials is mainly described by electromagnetic parameters such as dielectric constant, magnetic permeability and refractive index. The magnetic metamaterial is a metamaterial whose microstructure responds magnetically to an electromagnetic field, and it has the characteristic of artificially controlling the magnetic permeability. Magnetic metamaterials can adjust the equivalent magnetic permeability through the magnetic resonant structure (such as split resonant ring) and its deformation structure. When the electromagnetic wave is incident, the split resonant ring can form an equivalent LC resonant circuit in the structure, so as to realize the control and restraint of the electromagnetic wave through magnetic resonance, and realize the enhancement e...

Claims

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Application Information

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IPC IPC(8): G01R33/36G01R33/48H01F5/00
CPCG01R33/3642G01R33/48H01F5/00
Inventor 郑海荣胡小情李烨陈潇刘新
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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