Instantaneous elasticity imaging code detection method and system

It is a technology of instantaneous elastic imaging and encoding detection, which is applied in the directions of organ movement/change detection, image enhancement, image analysis, etc. It can solve the problems of ultrasonic signals that are difficult to extract micro-tissue vibration signal signals, insufficient detection penetration, and difficult to accurately detect, etc. question

Active Publication Date: 2016-08-10
SHENZHEN UNIV
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Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method and system for transient elastography encoding detection, aiming at solving the problem of the attenuation of ultrasonic signals in the prior art, w...

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  • Instantaneous elasticity imaging code detection method and system
  • Instantaneous elasticity imaging code detection method and system
  • Instantaneous elasticity imaging code detection method and system

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[0063] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0064] The present invention also provides a flow chart of a preferred embodiment of a transient elastography encoding detection method, such as figure 1 , figure 2 shown, where figure 2 Among them, 1 is the electromagnetic vibrator, 2 is the instantaneous low-frequency signal, 3 is the probe, 4 is the coded ultrasonic echo signal, and 5 is the medium to be tested. Among them, the methods include:

[0065] Step S100, the instantaneous low-frequency signal 2 sent by the signal generator is amplified to drive the electromagnetic vibrator 1, and the electromagnetic vibrator 1 drives the probe 3 to impact the surface of the medium 5 to be measure...

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Abstract

The present invention discloses an instantaneous elasticity imaging code detection method and a system. The method comprises the steps: an instantaneous low-frequency signal sent by a signal generator is subjected to power amplification to drive an electromagnetic vibrator and motivate the generation of an instantaneous shear wave inside a medium; modulating the coding of an ultrasonic pulse signal, detecting and tracking the vibration signal of the instantaneous shear wave based on the coded excitation technique to obtain a coded ultrasonic echo signal; amplifying and sampling the received coded ultrasonic echo signal to obtain coded detection echo discrete data; decoding according to the digital pulse compression technique to obtain a vibration displacement signal generated during the propagating process of the shear wave in a to-be-detected medium; according to the extracted displacement signal, calculating the speed of the instantaneous shear wave and the elastic modulus of the to-be-detected medium; and outputting the speed of the instantaneous shear wave and the elastic modulus of the to-be-detected medium. According to the technical scheme of the invention, the average emission energy of signals is improved, and the signal-to-noise ratio of echo signals is increased. Meanwhile, the system detection sensitivity and the ultrasonic penetration capability are improved. Moreover, the vibration signal extraction quality of the shear wave is improved, and the depth-detection penetrating power of the instantaneous elasticity imaging process is enhanced.

Description

technical field [0001] The invention relates to the technical field of elastography, in particular to a method and system for detecting codes of instantaneous elastography. Background technique [0002] Transient elastography technology provides a fast, simple, non-invasive and completely painless method for detecting liver stiffness. Its principle is mainly to judge the stiffness of the liver by measuring the propagation speed of low-frequency shear waves in liver tissue fibers, thereby evaluating the liver stiffness. degree of fibrosis. French company ECHOSENS owns the VCTE (Vibration Controlled Transient Elasticity) patented technology for non-invasive quantitative diagnosis of liver hardness, which is specially used for FibroScan equipment. The main device of this transient elastic imaging technology is to fix the ultrasonic transducer on the electromagnetic vibrator, which generates low The instantaneous vibration drives the ultrasonic transducer probe itself to produc...

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Application Information

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IPC IPC(8): G06T7/00A61B8/08
CPCA61B8/085A61B8/485G06T7/0012G06T2207/10132G06T2207/30056
Inventor 覃正笛和晓念陈昕陈思平
Owner SHENZHEN UNIV
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