Method and equipment for detecting viscoelasticity parameters of viscoelastic media
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: 2016-04-06
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 viscoelasticity parameters of viscoelastic media. The method comprises the steps that mechanical vibration with a single preset frequency is applied to the viscoelastic media, and shear waves are produced in the viscoelastic media; ultrasonic waves are emitted to the viscoelastic media, and ultrasonic echo signals are received; maximum displacement data of the shear waves under all depths is obtained according to the ultrasonic echo signals, and all maximum displacement data represents the maximum oscillation amplitudes of the shear waves when the shear waves propagate to different depths in the viscoelastic media; all maximum displacement data is fitted, and a maximum displacement attenuation curve is obtained; and viscoelasticity parameters of the viscoelastic media are determined according to the maximum displacement attenuation curve. Therefore, the viscoelasticity parameters relative to the elasticity and viscosity can be obtained, measurement dimensionality to tissue is increased, richer tissue parameter information and measurement dimensionality are provided conveniently, and a more accurate tissue fibrosis measurement result is provided conveniently.
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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Login to View More 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