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Method and device for using ultrasound Doppler information to display bloodstream image

A technology of Doppler information and blood flow, which is applied in the field of displaying blood flow images using ultrasonic Doppler information, can solve the problems of not being able to display blood flow distribution clearly and accurately, reducing the signal-to-noise ratio of ultrasonic Doppler signals, etc. Achieve the effects of improving clarity and sensitivity, simple method and structure, and reducing transmit power

Inactive Publication Date: 2008-07-09
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

These clinical situations or clinical requirements may significantly reduce the signal-to-noise ratio of ultrasound Doppler signals, making the existing color ultrasound Doppler imaging techniques unable to clearly and accurately display the distribution of blood flow

Method used

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  • Method and device for using ultrasound Doppler information to display bloodstream image
  • Method and device for using ultrasound Doppler information to display bloodstream image
  • Method and device for using ultrasound Doppler information to display bloodstream image

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Embodiment Construction

[0034] Fig. 1 is a structural block diagram of an ultrasonic diagnostic system constructed according to the principle of the present invention, which is a circuit block diagram after replacing the circuit part of the existing color ultrasonic Doppler diagnostic system with the content of the present invention. Except for the autocorrelation strength calculation circuit 106 in the figure and the following circuits, the circuit implementation process can be the same as the existing ones, but in order to fully illustrate the implementation idea of ​​the present invention, it will be fully described in the following description as a whole .

[0035]Generally, the present invention at least includes an ultrasonic signal transmitting and receiving device 1, a Doppler signal extracting unit 2, a Doppler signal processor 3, and a display unit 4; wherein, the ultrasonic signal transmitting and receiving device 1 at least includes: The transducer 101, the transmitting circuit 102, and t...

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Abstract

The invention relates to an ultrasound diagnosis technique, in particular to a method and a device of displaying blood flow images by ultrasonic Doppler information. The invention is characterized in that: firstly, ultrasonic impulses are emitted to an interesting direction or an interesting region according to the predetermined repeated frequency, and echo signals returning from the direction or the region are received; secondly, a series of orthogonal composite Doppler difference frequency signals with the sampling volume are extracted from the echo signals; thirdly, the delayed autocorrelation strength of the orthogonal composite Doppler difference frequency signals is calculated; fourthly, the blood flow images are displayed according to the delayed autocorrelation strength. The blood flow images can also be clearly displayed through the ultrasonic Doppler information under the conditions that the signal-noise ratio is low and the transmission power is not increased.

Description

technical field [0001] The invention relates to ultrasonic diagnosis technology, in particular to a method and device for displaying blood flow images by using ultrasonic Doppler information. Background technique [0002] The existing ultrasonic blood flow imaging techniques include two basic types: color Doppler velocity imaging technique and color Doppler power imaging technique. [0003] Color Doppler velocity imaging technology has a history of more than 20 years. The technique consists of acquiring Doppler signals at different locations within a region of interest or in a direction of interest and using these Doppler signals to estimate the Doppler phase shift or frequency for each sample volume. The Doppler phase shift or frequency is proportional to the velocity of blood flow in each sample volume, while the polarity of the shift indicates the direction of blood flow. After the Doppler signal power reaches a certain threshold, it is encoded into a color signal accor...

Claims

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Application Information

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IPC IPC(8): A61B8/06
Inventor 王作军曹铁生段云友蒋姗姗
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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