Nuclear magnetic resonance imaging method and system

A magnetic resonance imaging and magnetic resonance image technology, which is applied in medical science, sensors, diagnostic recording/measurement, etc., can solve problems such as time-consuming, low universality, and high algorithm complexity, and achieve the effect of improving imaging accuracy.

Inactive Publication Date: 2017-05-10
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0017] The present invention aims at the defects of the magnetic resonance imaging method, and provides a magnetic resonance imaging method and system with a data-driven compact framework to solve the problems of the existing imaging methods such as low universality, high algorithm complexity and time-consuming, etc., and improve the imaging efficiency. speed and precision

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  • Nuclear magnetic resonance imaging method and system
  • Nuclear magnetic resonance imaging method and system

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Embodiment Construction

[0032] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. The present invention can be implemented in many different forms, and is not limited to the embodiments described in this embodiment. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of the present invention.

[0033] However, those skilled in the art may realize that one or more of the detailed descriptions may be omitted, or other methods may also be adopted, and in some instances, some implementations are not described or not described in detail.

[0034] It is impossible for the fixed compact framework and transformation in the past to be optimized for all images. At present, data-driven compact framework and adaptive transformation / dictionary learning methods are more popular. Among them, compared to using a fixed sparse transformation, dict...

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Abstract

The invention discloses a nuclear magnetic resonance imaging method and system. The method is provided based on a compact frame and some fixing sparsely variable limitations. The method comprises the steps of constructing an initial compact frame; establishing a reconstruction model of a target image based on a compact frame sparse expression item under the constraint condition of data fitting bound terms; conducting alternant iterative upgrade on the compact frame, a magnetic resonance image and k space data; obtaining a reconstructed target image according to the reconstruction model when iteration reaches the end condition. According to the nuclear magnetic resonance imaging method, sparsity of the magnetic resonance image is made full use of, firstly the initial compact frame is constructed through a two-dimensional filter theoretical compact frame, then in the image reconstructing process, an on-line study method is utilized to upgrade the compact frame, and a method of Bregman is utilized twice in the solving process to effectively solve the optimization problem of the model so as to achieve the fast and high-quality magnetic resonance image and to improve the imaging precision of the magnetic resonance image.

Description

technical field [0001] The invention belongs to the technical field of magnetic resonance, and in particular relates to a fast magnetic resonance imaging method and system based on a data-driven compact framework. Background technique [0002] Magnetic resonance imaging (MRI) uses the principle of nuclear magnetic resonance to image the internal structure of objects. In the application of medical diagnosis, MRI can obtain images of soft tissue sections of the human body, which is helpful to check the energy state of the brain and cerebral hemorrhage in patients with epilepsy, and is of great value in the diagnosis of degenerative diseases, so it has very important significance in clinical diagnosis. It has developed into one of the important technologies in the field of biomedical engineering. [0003] The imaging speed of magnetic resonance imaging is slow, and the movement of human organs and the movement of the subject during the imaging process will affect the clarity o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055
CPCA61B5/055A61B5/7225
Inventor 王珊珊梁栋谭莎刘建博刘且根彭玺刘新郑海荣
Owner SHENZHEN INST OF ADVANCED TECH
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