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Novel fat reference magnetic resonance temperature imaging method

An imaging method and magnetic resonance technology, which are applied in the fields of 2D image generation, image data processing, medical science, etc., can solve the problems of inaccurate temperature images and deviation of results, and achieve the effect of simple and easy implementation and guarantee of accuracy.

Pending Publication Date: 2020-02-04
广州互云医院管理有限公司
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Problems solved by technology

[0006] The purpose of the present invention is to provide a new fat reference magnetic resonance temperature imaging method to solve the problem of result deviation and inaccurate temperature image in the above-mentioned background technology

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  • Novel fat reference magnetic resonance temperature imaging method
  • Novel fat reference magnetic resonance temperature imaging method
  • Novel fat reference magnetic resonance temperature imaging method

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] see figure 1 , a new fat reference magnetic resonance temperature imaging method is characterized in that: the method comprises the following steps:

[0023] Step 1. First, determine the temperature distribution interval of the fat-containing tissue according to its physical properties;

[0024] Step 2, determining the range of the chemical shift difference of water and fat according to the relationship between the chemical shift difference of water an...

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Abstract

The invention relates to the field of magnetic resonance imaging, and provides a novel fat reference magnetic resonance temperature imaging method. The method comprises the following steps: step 1, determining a temperature distribution interval of adipose-containing tissue according to the physical characteristics of the adipose-containing tissue; step 2, determining the range of a water-fat chemical displacement difference according to the relationship between water-fat component chemical displacement differences and temperature; step 3, determining an interval of echo time enabling the water-fat chemical displacement difference to reach a water-fat inverse phase according to the distribution of the water-fat chemical displacement difference in the step 2; and step 4, discretizing the echo time of the interval in the step 3, and respectively carrying out scanning imaging according to the discretized echo time. The method for obtaining the tissue temperature by comparing the signal amplitudes corresponding to the discretized echo time is simple and easy to implement, complex post-processing is not needed, the influence of T2* is corrected by using a mature chemical displacement coding imaging method, and the accuracy of temperature estimation is ensured.

Description

technical field [0001] The invention relates to magnetic resonance imaging, in particular to a new fat reference magnetic resonance temperature imaging method. Background technique [0002] Magnetic resonance temperature imaging can monitor the internal temperature distribution and changes of the object under test in a non-invasive, real-time and in vivo manner. Magnetic resonance can monitor temperature based on different temperature-sensitive parameters, commonly used parameters are proton density (PD), relaxation time (relaxation time), diffusion coefficient and proton resonance frequency shift (proton resonance frequency shift, PRFS). Because the proton resonance frequency in water has a linear relationship with temperature, and this linear relationship has nothing to do with tissue, the magnetic resonance temperature imaging technology based on PRFS is the most widely used. However, this technique cannot be used in tissues containing fat, so the hydrogen protons in fat...

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Application Information

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IPC IPC(8): A61B5/00A61B5/01A61B5/055G06T11/00
CPCA61B5/01A61B5/0033A61B5/055A61B5/72G06T11/00
Inventor 刘新黄志炜李晓伟陈铭湘
Owner 广州互云医院管理有限公司
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