Method for recognizing ultrasonic spectrum enveloped peaks by combining cardiac sound

A technology of spectrum envelope and peak identification, which is applied in the field of analysis and calculation of Doppler ultrasound spectrum, to achieve the effect of simple and convenient operation and improved accuracy

Active Publication Date: 2010-07-21
SHANGHAI 3F ELECTRONICS
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  • Abstract
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Problems solved by technology

[0005] At present, there is no method to analyze and calculate heart sound signals combined with ultrasonic Doppler cardiac output detection technology.

Method used

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  • Method for recognizing ultrasonic spectrum enveloped peaks by combining cardiac sound
  • Method for recognizing ultrasonic spectrum enveloped peaks by combining cardiac sound
  • Method for recognizing ultrasonic spectrum enveloped peaks by combining cardiac sound

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Embodiment

[0036] A kind of method that the present invention provides in conjunction with the ultrasonic spectrum envelope peak identification of heart sound, its steps are:

[0037] Step 1. Ultrasound Doppler spectrum analysis combined with heart sounds:

[0038] Step 1.1, collecting heart sound signals while the ultrasonic probe is collecting signals. For real-time signals, each time a new segment of IQ signal ultrasound data is obtained from the ultrasound hardware module, the Doppler spectrum is calculated in the computer. The process is to first perform Fourier transform on the IQ signal, and then calculate the amplitude to obtain a one-dimensional spectrum array. The process of debugging the device in this step is: place the heart sound probe above the left chest heart of the human body, and observe the waveform of the heart sound signal on the screen of the instrument (such as figure 2 As shown in the waveform above), when the heart sound waveform tends to be stable, the positi...

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Abstract

The invention provides a method for recognizing ultrasonic spectrum enveloped peaks by combining cardiac sound, which comprises the following steps: synchronously acquiring cardiac output signals and cardiac sound signals in relevant positions of human bodies by simultaneously adopting a Doppler ultrasonic probe and a cardiac sound probe, and inputting the cardiac output signals and the cardiac sound signals into a computer for processing; combining the cardiac output signals and the cardiac sound signals by the computer to automatically analyze effective peaks, and enveloping the effective peaks; and then, computing cardiac output parameters and cardiac sound parameters. The invention can more effectively extract real peaks, simultaneously can acquire relevant parameters capable of reflecting cardiac functions by computing effective enveloped peaks, can effectively acquire multiple parameters of spectrum enveloped peaks, and can really reflect basic physical conditions and changes of cardiac functions of human bodies.

Description

technical field [0001] The present invention relates to an analysis and calculation method of Doppler ultrasonic spectrum, which includes the automatic envelope of Doppler spectrum, the identification and extraction of accurate and effective envelope peaks under the guidance of heart sounds, and the calculation of cardiac function parameters of effective peaks , belonging to the technical field of medical signal and image processing. Background technique [0002] Ultrasonic Doppler cardiac output detection technology is a non-invasive method for monitoring cardiac output. Compared with existing technologies (Swan-Ganz catheter, PiCCO continuous cardiac output monitoring), this method is intuitive, accurate, non-invasive, sensitive and Good repeatability and other characteristics. Existing equipment using related technologies include cardiac function color Doppler ultrasound, black-and-white ultrasound, small portable ultrasound testing equipment, etc. [0003] Ultrasonic D...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00
Inventor 任春剑方志强马扬喜
Owner SHANGHAI 3F ELECTRONICS
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