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Low-rank and sparse matrix decomposition dynamic magnetic resonance imaging method

A magnetic resonance imaging and sparse matrix technology, applied in the field of imaging, can solve the problems of amplifying sampling data noise, limiting the acceleration effect of parallel imaging technology, etc., and achieving the effect of improving imaging speed

Inactive Publication Date: 2018-08-24
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

This characteristic will amplify the noise in the sampled data and limit the acceleration effect of parallel imaging techniques in practical MRI applications

Method used

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  • Low-rank and sparse matrix decomposition dynamic magnetic resonance imaging method
  • Low-rank and sparse matrix decomposition dynamic magnetic resonance imaging method
  • Low-rank and sparse matrix decomposition dynamic magnetic resonance imaging method

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0033] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein explain.

[0034] like figure 1 As shown, the embodiment describes a dynamic magnetic resonance imaging method with low rank and sparse matrix decomposition, comprising the following steps:

[0035] Step 1. According to the application of compressed sensing and low-rank matrix filling in dynamic magnetic reso...

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Abstract

The present invention discloses a low-rank and sparse matrix decomposition dynamic magnetic resonance imaging method, and relates to the field of magnetic resonance imaging. The method comprises the steps of: introducing a low-rank and sparse model into dynamic magnetic resonance imaging; performing analysis of low-rank and sparse matrix decomposition through non-correlated requirements, and completing improvement; and applying the improved low-rank and sparse decomposition to image reconstruction of undersampling dynamic magnetic resonance imaging. The low-rank and sparse matrix decompositiondynamic magnetic resonance imaging method is employed to ensure the quality and the imaging speed of the image reconstruction so as to improve the image reconstruction quality in a condition of the same undersampling rate.

Description

technical field [0001] The invention relates to imaging technology, in particular to a dynamic magnetic resonance imaging method. Background technique [0002] With the development of magnetic resonance imaging technology, the speed of dynamic magnetic resonance imaging will affect the practical application of magnetic resonance imaging technology. Compressed sensing technology and parallel imaging technology have been applied to dynamic magnetic resonance imaging. Among them, compressed sensing imaging technology uses the sparsity of magnetic resonance images to reconstruct images through under-sampled K-space data. Parallel imaging technology uses multi-channel phased array coils to simultaneously receive magnetic resonance signals, and then utilizes the spatial sensitivity difference of receiving coils. to encode spatial information and reconstruct images. [0003] However, for compressive sensing imaging techniques, magnetic resonance images are often only highly compr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00G06T5/00
CPCG06T11/005G06V10/513G06T5/70
Inventor 杨敏周宝来荆晓远晏士友
Owner NANJING UNIV OF POSTS & TELECOMM
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