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Magnetic resonance imaging method and system

A magnetic resonance imaging and K-space technology, applied in the image field, can solve problems affecting imaging quality, strong curling artifacts in magnetic resonance images, etc.

Active Publication Date: 2017-02-15
SHENZHEN INST OF ADVANCED TECH
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Problems solved by technology

[0004] Based on this, it is necessary to provide a magnetic resonance imaging method and system for the problem that the obtained magnetic resonance image has strong wrinkle artifacts and affects the imaging quality by directly performing inverse Fourier transform on the undersampled data.

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[0022] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] Unless the context clearly states otherwise, the number of elements and components in the present invention can exist in a single form or in multiple forms, and the present invention is not limited thereto. Although the steps in the present invention are arranged with labels, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted. It can be understood that the term "and / or" used herein refers to and covers any and all possible comb...

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Abstract

The invention provides a magnetic resonance imaging method. The method includes: using a preset sampling mode to acquire the insufficiently-sampled K space data corresponding to a K space; training a depth learning model according to the preset sampling mode, using the depth learning model obtained by training to represent the mapping relation between sampled points and unsampled points in the K space, and filling the K space according to the obtained K space data and the mapping relation to obtain complete K space data; performing Fourier transform on the complete K space data to obtain magnetic resonance images. Due to that fact that the insufficiently-sampled K space data is used, fast scanning and fast imaging can be achieved. Due to the fact that Fourier transform is performed on the complete K space data to obtain the magnetic resonance images, fold artifacts can be avoided, and high imaging quality is achieved. The invention further provides a magnetic resonance imaging system.

Description

technical field [0001] The present invention relates to the field of image technology, in particular to a magnetic resonance imaging method and system. Background technique [0002] K-space is the filling storage space format of the original data of the magnetic resonance image, and the reconstructed magnetic resonance image can be obtained by inverse Fourier transform of the K-space data. Data collection needs to satisfy the Nyquist sampling theorem, so many phase encoding lines need to be collected to meet the needs of reconstructing magnetic resonance images, which seriously affects the scanning speed. [0003] In order to improve the speed of magnetic resonance imaging, fast imaging technology is widely used in magnetic resonance imaging. This technology mainly uses the sparsity of magnetic resonance signals or the sensitivity information of the receiving coil to reduce the number of phase encoding lines necessary for imaging and obtain faster scanning speed. We call t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T11/00
Inventor 梁栋朱燕杰朱顺刘新郑海荣
Owner SHENZHEN INST OF ADVANCED TECH