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Magnetic resonance imaging method and system and related devices

A magnetic resonance imaging and image technology, applied in the field of image processing, can solve the problems affecting imaging quality, noise, aliasing artifact amplification system, etc., and achieve the effect of less aliasing artifacts and improved quality

Active Publication Date: 2019-12-13
SHENZHEN UNIV
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  • Application Information

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Problems solved by technology

When the sampling rate is low, the scanned and reconstructed image will have serious aliasing artifacts and amplification system noise, which will affect the imaging quality

Method used

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  • Magnetic resonance imaging method and system and related devices
  • Magnetic resonance imaging method and system and related devices
  • Magnetic resonance imaging method and system and related devices

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Embodiment Construction

[0040] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0041] Please refer to figure 1 , figure 1 It is a flow chart of a magnetic resonance imaging method provided in the embodiment of the present application, the method includes:

[0042] S101: Acquire a two-dimensional airspace image;

[0043] This step needs to acquire a two-dimensional airspace image, and the generation and collection process of t...

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Abstract

The invention provides a magnetic resonance imaging method. The comprises the steps that two-dimensional spatial domain images are acquired; the two-dimensional spatial domain images are superposed toobtain a three-dimensional spatial domain image; features are extracted from the three-dimensional spatial domain image by using a three-dimensional tight frame to obtain low-frequency information and high-frequency information; constructing a sparsity model is constructed according to the low-frequency information, the high-frequency information and a sparsity constraint; and a magnetic resonance image is generated by using the sparsity model. Two-dimensional images are superposed to form three-dimensional image data, thethree-dimensional tight frame is used for carrying out feature extraction and constraint on the three-dimensional images, and sparsity constraint is carried out on three-dimensional high-frequency information in feature information of the three-dimensional tight frame, so that the reconstructed image includes fewer aliasing artifacts, and the quality of the reconstructed images is improved. The invention further provides a magnetic resonance imaging system, a computer readable storage medium and magnetic resonance imaging equipment with the above advantages.

Description

technical field [0001] The present application relates to the field of image processing, in particular to a magnetic resonance imaging method, system and related devices. Background technique [0002] Parallel magnetic resonance imaging (parallel Magnetic Resonance Image, pMRI) is an imaging technology based on the phenomenon of nuclear magnetic resonance. With a large amount of information, native three-dimensional cross-sectional imaging can be obtained, and the soft tissue structure can be clearly displayed with high resolution. [0003] Limited by the Nyquist sampling theorem, pMRI equipment takes a long time to scan, and the too fast switching frequency of the gradient magnetic field will make the patient feel uncomfortable. If dense radio frequency pulses are used in a short period of time, the internal tissues of the human body will be damaged due to the accumulation of radio frequency energy. heat up. The way to increase the sampling speed through hardware has basi...

Claims

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Application Information

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IPC IPC(8): G01R33/48
CPCG01R33/48G01R33/4818
Inventor 李炎然汪乔朱泽轩
Owner SHENZHEN UNIV