A method and a device for extracting ultrasonic Doppler frequency responses

A technology of Doppler frequency and frequency response, applied in the field of medical algorithms

Pending Publication Date: 2017-02-15
来安中衡物联网设备科技有限公司
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to propose a method and device for extracting ultrasonic Doppler frequency response, aiming at solving the problem of how to extract arbitrary frequency components

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  • A method and a device for extracting ultrasonic Doppler frequency responses
  • A method and a device for extracting ultrasonic Doppler frequency responses
  • A method and a device for extracting ultrasonic Doppler frequency responses

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Embodiment Construction

[0039] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that, the specific embodiments described herein are only used to explain the embodiments of the present invention, but are not intended to limit the embodiments of the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the embodiments of the present invention.

[0040] refer to figure 1 , figure 1 It is a schematic flowchart of a method for extracting an ultrasonic Doppler frequency response provided by an embodiment of the present invention.

[0041] like figure 1 As shown, the method for extracting the ultrasonic Doppler frequency response includes:

[0042] Step 101, configure the state model according to the LCR circuit response principle;

[0043] Among them, the response frequency can be loca...

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Abstract

The invention provides a method and a device for extracting ultrasonic Doppler frequency responses. The method comprises the steps of configuring a state model according to the LCR circuit response principles; determining a frequency response center through setting of an LC in the state model; determining an amplitude bandwidth and response through setting of an R in the state model. The ultrasonic Doppler signal extracting method is simple, can realize analysis and extraction of any frequency components, and can obtain Doppler envelopes through integral operation directly. The method has the advantages of high frequency estimation accuracy, great noise suppressing capability, low algorithm complexity and low calculating resource consumption, and can meet the requirement for instantaneity; the method is free of double frequency multiplication interference of Doppler flow, which is the biggest problem in ultrasonic continuous Doppler envelope extracting and heart rate detection.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of medical algorithms, and in particular, to a method and device for extracting an ultrasonic Doppler frequency response. Background technique [0002] As a powerful tool for analyzing time-varying non-stationary signals, time-frequency analysis is one of the hotspots in modern signal processing research. It describes the relationship between signal frequency and time. In ultrasonic Doppler medical diagnosis, time-frequency analysis and envelope extraction are used to extract the required physiological parameters from the ultrasonic Doppler signal, and to detect the blood flow condition without damage, thereby providing information for the blood circulatory system and vascular diseases. It has been widely used in clinical medicine. [0003] For the ultrasonic Doppler signal, in the actual blood flow detection, in addition to the inherent non-stationarity, the time-frequency analysis of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00
CPCA61B8/52A61B8/488
Inventor 覃正笛郑全覃道鼎
Owner 来安中衡物联网设备科技有限公司
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