Automatic aliasing judgment and Doppler imaging adjusting method and ultrasonic system thereof

A technology of Doppler spectrogram and aliasing, which is applied in ultrasonic/acoustic/infrasonic diagnosis, diagnosis, and acoustic diagnosis, etc. It can solve problems such as adjustment errors, large variance, and multiple aliasing that cannot be judged. Easy observation and diagnosis, and performance-enhancing effects

Active Publication Date: 2010-12-01
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

When the spectrogram is an arterial spectrogram, if there is a blood flow signal (multiple aliasing) at the position where the signal is weakest, the variance is large; however, when the spectrogram is a venous spectrog...

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  • Automatic aliasing judgment and Doppler imaging adjusting method and ultrasonic system thereof
  • Automatic aliasing judgment and Doppler imaging adjusting method and ultrasonic system thereof
  • Automatic aliasing judgment and Doppler imaging adjusting method and ultrasonic system thereof

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Embodiment Construction

[0027] In order to improve the accuracy and efficiency of aliasing judgment, the present invention adds the judgment of multiple aliasing of veins on the basis of traditional multiple aliasing judgments, which specifically includes the following steps:

[0028] Collect Doppler spectrogram;

[0029] Comparing the intensity parameters of the entire field signal of the sonogram with a threshold value, it is judged whether multiple aliasing of veins occurs in the sonogram;

[0030] According to the characteristics of the signal in the sonogram area, determine whether the sonogram has multiple aliasing of arteries;

[0031] If multiple aliasing does not occur in the above venous aliasing determination and arterial aliasing determination results, it is determined that multiple aliasing does not occur in the Doppler sonogram.

[0032] It can be seen that in the usual aliasing judgment, the present invention adds a step of multi-venous aliasing judgment, and then combines the arteria...

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Abstract

The invention discloses an automatic aliasing judgment and Doppler imaging adjusting method and an ultrasonic system thereof. The method comprises the following steps of: acquiring a Doppler spectrogram; comparing strong and weak parameters of the whole field signals of the spectrogram with a threshold value and judging whether the spectrogram performs vein aliasing for multiple times or not; according to the characteristics of the spectrogram area signals, judging whether the spectrogram performs artery aliasing for multiple times or not; and if the vein aliasing judgment result and the artery aliasing judgment result perform aliasing for multiple times, judging that the Doppler spectrogram does not perform aliasing for multiple times. In the method, the influence of spectrogram forms on the judgment is taken into full consideration, so the aliasing judgment of a vein spectrogram is added, the probability of erroneous judgment is reduced, and the accuracy of the aliasing judgment is improved.

Description

technical field [0001] The invention relates to an automatic adjustment technology of Doppler acoustic spectrogram parameters, in particular to a method for improving the automatic adjustment performance of ultrasonic Doppler imaging and an ultrasonic system thereof. Background technique [0002] Pulse Doppler technology in ultrasonic Doppler diagnostic equipment transmits ultrasonic signals to the target body at a certain pulse repetition frequency (abbreviated as PRF), and forms a spectrogram through spectrum analysis of echo signals. The abscissa is Time, the ordinate is the Doppler frequency shift frequency, the higher the frequency, the faster the blood flow, and the position where the frequency is 0 is called the baseline. At the same time, the brightness at different frequency positions is different. The higher the brightness, the stronger the signal at this frequency point. The value of a statistical characteristic distribution (for example, Gaussian distribution), ...

Claims

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Application Information

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IPC IPC(8): A61B8/00A61B8/06
Inventor 李勇崔晗李雷
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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