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Magnetic resonance diffusion tensor imaging method and system

A technology of diffusion tensor imaging and magnetic resonance, applied in diagnostic recording/measurement, medical science, sensors, etc., to reduce motion artifacts, improve data acquisition speed, and shorten scan time

Active Publication Date: 2011-04-20
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Although the image resolution of the commonly used echo planar-DTI (EPI-DTI) technology has been improved, it is not as good as the spatial resolution (1×1×2mm) that the isolated heart can achieve. 3 ), there is still a large gap

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  • Magnetic resonance diffusion tensor imaging method and system
  • Magnetic resonance diffusion tensor imaging method and system
  • Magnetic resonance diffusion tensor imaging method and system

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Embodiment Construction

[0028] figure 1 The flow of the method for magnetic resonance diffusion tensor imaging in an embodiment is shown, including the following steps:

[0029] In step S10, K-space sampling is performed on the imaging object according to the degree of sparsity to obtain K-space data of the diffusion-weighted reference image. In this embodiment, the sparsity refers to the ratio of the amount of K-space data under the condition of under-sampling and full-sampling, which can be reflected by a speedup ratio or a sampling rate that is inversely proportional to the speedup ratio. For example, the smaller the sparsity, the larger the speedup ratio and the smaller the sampling rate. During the sampling process in step S10, a smaller sparsity can be set for sampling. The step of performing sparse sampling on the imaging object is: performing K-space sparse sampling on the imaging object in a radial scanning manner. Specifically, the radial scanning method can go beyond Nyquist for under-s...

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Abstract

The invention relates to a magnetic resonance diffusion tensor imaging method which comprises the following steps: performing K space sparse sampling on an imaging object to obtain K space data of a diffusion weighted reference image; performing K space sparse sampling on the imaging object to obtain the K space data of a diffusion weighted image; performing share filling on the K space data of the diffusion weighted reference image and the diffusion weighted image by keyhole imaging; and performing image reconstruction on the K space data after share filling. The magnetic resonance diffusion tensor imaging method and system provided by the invention have the advantages of reconstructing complete data, shortening the scanning time, improving the data acquiring speed and achieving rapid imaging by adopting sparse sampling rapidly and continuously to acquire K space data and performing share filling under the action of the keyhole imaging technology.

Description

【Technical field】 [0001] The invention relates to imaging technology, in particular to a magnetic resonance diffusion tensor imaging method and system. 【Background technique】 [0002] Myocardial infarction is a serious heart disease, which is caused by coronary artery disease, which leads to a sharp reduction or interruption of blood flow to the corresponding myocardium, which eventually leads to ischemic necrosis of the myocardium. Myocardial structure is one of the important factors that determine cardiac function. Changes in myocardial structure are one of the most important causes of heart failure caused by myocardial infarction. A detailed study of the structure of the myocardium is helpful for a deep understanding of the mechanism of cardiac motion, which in turn provides a reference and basis for the diagnosis and treatment of a diseased heart. [0003] In recent years, diffusion tensor imaging (DTI), as a high spatial resolution, non-invasive imaging technique, has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055
Inventor 戴睿彬吴垠刘新郑海荣邹超刘伟寇波
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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