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Method and device for detecting viscosity parameter of viscoelastic medium

A viscosity parameter and viscoelasticity technology, applied in the medical field, can solve the problems of poor operability and low accuracy of viscosity parameter measurement results, and achieve the effect of convenient operation and high accuracy of viscosity parameter measurement results.

Active Publication Date: 2016-01-27
WUXI HISKY MEDICAL TECH
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Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the present invention provides a method and equipment for detecting viscosity parameters of viscoelastic media, which are used to overcome the defects of poor operability of existing viscosity parameter detection methods and low accuracy of viscosity parameter measurement results.

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  • Method and device for detecting viscosity parameter of viscoelastic medium
  • Method and device for detecting viscosity parameter of viscoelastic medium

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Embodiment Construction

[0029] figure 1 It is a flow chart of Embodiment 1 of the method for detecting viscosity parameters of viscoelastic media in the present invention. The method provided in this embodiment is mainly used to detect the viscosity parameters of liver tissue, and can be performed by a detection device, which can be an existing There is a non-invasive liver fibrosis detection instrument, but the processing function required to execute the method described in this embodiment is added to the non-invasive liver fibrosis detection instrument. The detection equipment mainly includes a control host and a probe, which includes a vibrator for generating mechanical vibrations and an ultrasonic transducer for emitting and receiving ultrasonic waves.

[0030] Such as figure 1 As shown, the viscosity parameter detection method of the viscoelastic medium may comprise the steps:

[0031] Step 101 , applying mechanical vibration of a single preset frequency to the viscoelastic medium to generate ...

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Abstract

The invention provides a method and a device for detecting a viscosity parameter of a viscoelastic medium. The method comprises the steps of applying mechanical vibration with single preset frequency to the viscoelastic medium, and generating shear waves in the viscoelastic medium; transmitting ultrasonic waves to the viscoelastic medium, and receiving ultrasonic echo signals; acquiring displacement or strain data of the shear waves according to the ultrasonic echo signals; calculating oscillation amplitude attenuation metric parameters of the shear waves at different depths according to the displacement or strain data; fitting oscillation amplitude attenuation metric parameters of the shear waves at different depths, acquiring an oscillation amplitude attenuation curve of the shear waves, and determining the viscosity parameter of the viscoelastic medium according to the slope of the oscillation amplitude attenuation curve. According to the invention, low-frequency vibration with the single frequency is only required to be applied to the viscoelastic medium, and the viscosity parameter of the viscoelastic medium is acquired through the mode of acquiring the oscillation amplitude attenuation curve of the shear waves, thereby more sufficiently utilizing acquired data information, and being convenient to operate and high in accuracy.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to a method and equipment for detecting viscosity parameters of a viscoelastic medium. Background technique [0002] Liver fibrosis is usually caused by excessive deposition of extracellular matrix proteins and occurs frequently in patients with most types of chronic liver disease. Since early liver fibrosis or liver cirrhosis is reversible or controllable, accurate and effective early diagnosis of liver fibrosis is very important. [0003] Shear wave elastography can quantitatively assess the degree of liver fibrosis and cirrhosis by measuring liver stiffness. Among them, the most widely used in clinical non-invasive detection of liver fibrosis classification is transient elastography. [0004] Because the liver is a viscoelastic body, that is, a viscoelastic medium, changes in its viscosity parameters are closely related to various liver diseases. Therefore, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/08A61B8/00
Inventor 翟飞邵金华孙锦段后利
Owner WUXI HISKY MEDICAL TECH
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