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Method and device for detecting low-speed blood flow Doppler signals through wall filters

A Doppler signal and wall filter technology, which is applied in the field of ultrasonic medical detection, can solve the problems of mistaking tissue signals as blood flow and lack of blood flow information, so as to avoid misdiagnosis.

Pending Publication Date: 2018-04-13
苏州掌声医疗科技有限公司
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Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides a method and device for detecting low-velocity blood flow Doppler signals through a wall filter, which can automatically adjust the wall filter according to image data, thereby improving the detection of low-velocity blood flow and solving the problem of Solve the problem of lack of blood flow information or tissue signal being mistaken for blood flow in low-velocity blood flow detection

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  • Method and device for detecting low-speed blood flow Doppler signals through wall filters
  • Method and device for detecting low-speed blood flow Doppler signals through wall filters
  • Method and device for detecting low-speed blood flow Doppler signals through wall filters

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Embodiment

[0036] The present invention proposes a wall filter that can be automatically adjusted according to image data, thereby improving the detection of low-speed blood flow, solving the problem of lack of blood flow information or tissue signals being mistaken for blood flow in current low-speed blood flow detection, and reducing the probability of misdiagnosis methods and devices.

[0037] combine figure 1 , C-mode wall filtering, autocorrelation and blood flow detection are all completed by the FPGA processing module, and the final detection results that meet the standards will be output to the DSC scan conversion module and displayed.

[0038] Different from the conventional C-mode processing method, the present invention sets two wall filters, the first one is the conventional wall filter 1, and the initial number of stages is set to be medium or small according to the measurement target . The wall-filtered signal is processed by the autocorrelation processing module 1 to obt...

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Abstract

The invention discloses a method and device for detecting low-velocity blood flow Doppler signals through wall filters. The device includes two wall filters, two autocorrelation processing modules, two blood flow detection modules, and a low-speed blood flow detection module. detection module and scan conversion module. The two-wall filters adopt different filtering stages, and the two-wall filters perform wall filtering on the detection signal of the Doppler ultrasound equipment. The method and device of the present invention can automatically adjust the number of wall filter series according to the newly added effective blood flow point ratio, which improves the accuracy of detection of low-speed blood flow, such as venous blood flow, and is inexperienced for Doppler ultrasound equipment operators. It is especially meaningful when it can help operators obtain accurate blood flow images and effectively avoid misdiagnosis.

Description

technical field [0001] The invention relates to the field of ultrasonic medical detection, in particular to a method and device for detecting low-velocity blood flow Doppler signals through a wall filter. Background technique [0002] Ultrasound examination is one of the most commonly used methods in medical imaging examination. It has the advantages of convenience, non-invasiveness, and high cost performance, and has always been relied on by clinicians. The maturity of blood flow detection technology using the Doppler principle has further improved the scope and importance of ultrasonic diagnosis. Color Doppler ultrasound generally uses autocorrelation technology for Doppler signal processing, and the obtained blood flow signal is color-coded and superimposed on the two-dimensional image in real time to form a color Doppler ultrasound blood flow image. Therefore, it not only has the advantages of two-dimensional ultrasound structure images, but also provides rich informati...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/06
CPCA61B8/06A61B8/488A61B8/5207
Inventor 吴哲王权泳
Owner 苏州掌声医疗科技有限公司
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