Method and equipment for detecting viscoelastic parameters of viscoelastic medium
A parameter detection and elastic parameter technology, applied in the medical field, can solve problems such as adverse effects of early lesion detection results, achieve the effect of enriching tissue parameter information and measurement dimensions, increasing measurement dimensions, and accurate measurement results
Active Publication Date: 2018-03-13
WUXI HISKY MEDICAL TECH
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[0005] At present, the measurement of tissue is mainly to measure the elastic parameters of the tissue, while ignoring the viscosity parameters means ignoring the viscoelastic parameters of the tissue, which will adversely affect the detection results of early lesions in tissues such as liver fibrosis
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[0027] figure 1 It is a flow chart of Embodiment 1 of the method for detecting viscoelastic parameters of viscoelastic media in the present invention. The method provided in this embodiment is mainly used to detect viscoelastic parameters of liver tissue, and can be performed by a detection device, which can It is an existing 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.
[0028] Such as figure 1 As shown, the viscoelastic parameter detection method of the viscoelastic medium may comprise the following steps:
[0029] Step 101, applying mechanical vibration of a single preset frequency to the viscoelastic medium to gen...
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The invention provides a method and equipment for detecting viscoelastic parameters of a viscoelastic medium. The method includes: applying mechanical vibration of a single preset frequency to the viscoelastic medium to generate shear waves in the viscoelastic medium; emitting ultrasonic waves to the viscoelastic medium , and receive the ultrasonic echo signal; obtain the maximum displacement data of the shear wave at each depth according to the ultrasonic echo signal, and each maximum displacement data represents the shear wave when the shear wave propagates to different depths in the viscoelastic medium The maximum oscillation amplitude; fitting each maximum displacement data to obtain the maximum displacement attenuation curve; determining the viscoelastic parameters of the viscoelastic medium according to the maximum displacement attenuation curve. Therefore, the viscoelastic parameters related to both elasticity and viscosity can be obtained, which increases the measurement dimension of the tissue, helps to provide richer tissue parameter information and measurement dimensions, and helps to provide more accurate tissue fibrosis measurement results.
Description
technical field [0001] The invention belongs to the field of medical technology, and in particular relates to a viscoelastic parameter detection method and equipment 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 viscoelastic parameters are closely related to various liver diseases. Therefore, liver...
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IPC IPC(8): A61B8/08A61B8/00
CPCA61B8/085A61B8/485A61B8/52A61B8/08A61B5/0051G01S7/52042G01S15/899G01S15/8911G01S7/52079A61B5/4244A61B5/7225A61B8/5207A61B8/00
Inventor 翟飞邵金华孙锦段后利王强
Owner WUXI HISKY MEDICAL TECH