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Magnetic resonance parallel image acquisition and image reconstruction method

A magnetic resonance image and acquisition method technology, which is applied in the field of parallel acquisition of magnetic resonance images and image reconstruction, can solve the problems of artifacts and inaccurate merging coefficients, achieves removal of artifacts, compensates for poor signal-to-noise ratio, and obtains accurate results. Effect

Active Publication Date: 2015-04-15
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for parallel acquisition of magnetic resonance images and image reconstruction to solve the problem of artifacts caused by inaccurate combination coefficients

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  • Magnetic resonance parallel image acquisition and image reconstruction method
  • Magnetic resonance parallel image acquisition and image reconstruction method

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Embodiment Construction

[0027] A method for parallel acquisition of magnetic resonance images and image reconstruction proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in very simplified form and use imprecise ratios, which are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention.

[0028] The core idea of ​​the present invention is that the method for parallel acquisition of magnetic resonance images provided by the present invention obtains the merging coefficient through at least two fitting modules, so that the amount of fitting data increases, making up for the influence of poor signal-to-noise ratio, and fully considering Every available fitting module is used to make the fitting coe...

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Abstract

The invention provides a magnetic resonance parallel image acquisition method which comprises the steps that at least two fitting modules are set in an undersampled k space; structures of k space matrixes included in the fitting modules are the same; each fitting module internally comprises actually acquired k space data and data fitted by the actually acquired k space data; a coalescence coefficient is obtained by using two or more fitting modules; undersampled data is calculated by using the coalescence coefficient; the undersampled k space is filled; and a full sampled k space is formed. The invention further provides a magnetic resonance image reconstruction method. According to the magnetic resonance image reconstruction method, the coalescence coefficient is obtained by using at least two fitting modules, so that the fitting data size is increased, an influence of a poorer signal-to-noise ratio is made up, and an artifact arising from coalescence coefficient inaccuracy can be removed efficiently.

Description

technical field [0001] The invention relates to magnetic resonance imaging technology, in particular to a parallel acquisition and image reconstruction method of magnetic resonance images. Background technique [0002] In magnetic resonance imaging technology, the speed of imaging is an important criterion for measuring imaging methods. Important factors limiting imaging speed include the speed of data acquisition and k-space filling. The general data collection method needs to collect full k-space data, and then the image can be reconstructed. The magnetic resonance parallel acquisition and reconstruction technology uses coil recombination to fill in the under-sampled data, and reconstructs with the filled k-space data. Using this method, only a part of the k-space data can be collected according to the requirement, and it is not necessary to collect the entire k-space. Using this method can greatly speed up the imaging speed. [0003] One of the more commonly used para...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/56
Inventor 翟人宽
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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