Detecting method of magnetic resonance elastography accuracy

A technology of magnetic resonance elasticity and detection method, which can be used in diagnostic recording/measurement, medical science, sensors, etc., and can solve the problem of low imaging accuracy.

Active Publication Date: 2013-02-13
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

In the traditional magnetic resonance elastography technology, there is

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  • Detecting method of magnetic resonance elastography accuracy
  • Detecting method of magnetic resonance elastography accuracy
  • Detecting method of magnetic resonance elastography accuracy

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Embodiment Construction

[0033] In order to solve the problem of low imaging accuracy due to the lack of means to test the accuracy of the traditional magnetic resonance elastography technology, a magnetic resonance elastography accuracy detection method that can detect the accuracy of magnetic resonance elastography is proposed .

[0034] During magnetic resonance elastography, the predetermined external force applied to the predetermined imaging area of ​​the object under test is excited. Since the predetermined external force is small, it can be seen that the predetermined imaging area is still in a balanced state, so the stress and strain force in magnetic resonance elastography The relationship between can be regarded as a plane elastic problem.

[0035] see figure 1 , the magnetic resonance elastography accuracy detection method of the present embodiment, comprises the following steps:

[0036] Step S100, acquiring an imaging displacement value of a predetermined imaging region obtained by mag...

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Abstract

The invention discloses a detecting method of magnetic resonance elastography accuracy, comprising the following steps: obtaining an imaging displacement value at a predetermined imaging area generated by the magnetic resonance elastography under a predetermined external force; obtaining the predetermined external force and the elasticity modulus of the predetermined imaging area; according to the predetermined external force, obtaining the stress of the predetermined imaging area; based on the stress of the predetermined imaging area and the elasticity modulus, obtaining a theoretical displacement value of the predetermined imaging area; comparing the theoretical displacement value of the predetermined imaging area with the imaging displacement value generated by the magnetic resonance elastography, and detecting the accuracy of the magnetic resonance elastography. The detecting method of magnetic resonance elastography accuracy is to adopt a finite volume element method, is based on the stress of the predetermined imaging area and the elasticity modulus, and obtains the theoretical displacement value, which provides references for solving the elasticity modulus of the imaging area by inverse calculation after obtaining the displacement diagram of the magnetic resonance elastography.

Description

technical field [0001] The invention relates to magnetic resonance technology, in particular to a method for detecting the accuracy of magnetic resonance elastography. Background technique [0002] Stiffness is an important mechanical parameter in the physical properties of human tissue. Elasticity changes in biological tissues are often closely related to pathological phenomena. There are often differences in elastic modulus or hardness between diseased tissues and normal tissues. This difference provides important reference information for clinical diagnosis of diseases. Magnetic resonance elastography (Magnetic Resonance Elastography, MRE), as a new type of non-invasive imaging method, can visually display and quantify the elasticity of internal tissues of the human body, and image the elasticity of tissues, making "image palpation" possible. It is of great significance in the detection, staging of liver cirrhosis, atherosclerotic plaque, muscle damage, brain disease det...

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Application Information

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IPC IPC(8): A61B5/055
Inventor 丁玉琼黄文慧钟耀祖张丽娟刘新郑海荣
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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