Magnetic resonance diffusion tensor imaging method and system

A technology of diffusion tensor imaging and magnetic resonance, which is applied in diagnostic recording/measurement, medical science, sensors, etc. It can solve the problems of slow data acquisition and serious image artifacts, and achieve the effect of fast imaging

Active Publication Date: 2011-04-13
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

[0003] At present, the traditional imaging technology is slow in acquiring data and is very sensitive to motion, resulting in serious image artifacts

Method used

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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

[0027] For the MRI process of a moving object, the image is in its spatial position and a function of time t. If the scanning speed of MRI is fast enough, all the data needed to reconstruct the image can be collected before the spatial position of the object changes greatly, then the object can be considered to be in a static state at the moment of signal scanning. However, current MRI equipment cannot achieve such high scanning speeds.

[0028] Based on this, it is difficult to collect enough data for image reconstruction at a relatively static moment. At this time, the acquired magnetic resonance signal and the spin proton density are actually spatial positions. and time t, where the relationship between the received signal S(k, t) and the required image function ρ(r, t) is:

[0029] S ( k , t ) = ∫ - ∞ + ...

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Abstract

The invention relates to a magnetic resonance diffusion tensor imaging method, comprising the following steps: acquisition is carried out on k space, and navigation data and measured data are acquired; a time base function and a frequency component parameter are acquired according to the navigation data, and a space base function is acquired according to the measured data; k-t spatial data is obtained by computation according to the time base function, the frequency component parameter and the space base function; and Fourier inversion is carried out according to the k-t spatial data, and a reconstructed image is obtained. Based on the partial separable function technology, the scanning data acquisition speed is quickened, and imaging information of moving object is rapidly acquired, thus achieving rapid imaging.

Description

【Technical field】 [0001] The present invention relates to magnetic resonance technology, in particular to a magnetic resonance diffusion tensor imaging method and system. 【Background technique】 [0002] Myocardial infarction is one of the largest causes of death in developing countries. In my country, the incidence of myocardial infarction has shown an obvious upward trend in recent years, accounting for more than half of cardiovascular diseases and becoming a heavy burden on health care and health resources. Changes in myocardial structure are one of the most important causes of heart failure caused by myocardial infarction. Therefore, the study of myocardial structure can not only understand the mechanism of cardiac function from the perspective of microstructure, but also detect diseases from changes at the cellular level, and provide corresponding basis for diagnosis and treatment. [0003] At present, the traditional imaging technology is slow in acquiring data and is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055
Inventor 吴垠戴睿彬刘新郑海荣邱本胜邹超张娜谢国喜
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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