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Priority coding after-treatment method and device colorful blood stream imaging

A color blood flow and priority technology, applied in the medical field, can solve the problems of blood flow display black holes, isolated points, etc., and achieve the effect of improving the display form

Active Publication Date: 2008-07-02
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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AI Technical Summary

Problems solved by technology

The above-mentioned existing technologies have contributed to improving the shape of the blood flow display, but there may still be problems such as black holes and isolated points in the blood flow display

Method used

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  • Priority coding after-treatment method and device colorful blood stream imaging
  • Priority coding after-treatment method and device colorful blood stream imaging
  • Priority coding after-treatment method and device colorful blood stream imaging

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Embodiment Construction

[0034] A schematic block diagram of a typical color blood flow imaging system in the prior art is shown in FIG. 1 . The ultrasonic pulse generated by the transmitting circuit excites different array elements on the ultrasonic probe according to the set time delay, so that the transmitting beam is focused at the detection depth of interest in the human body, thereby obtaining the best image quality in the region of interest. The emitted sound beam encounters different tissue interfaces or scattering units in the human body to generate reflected or scattered echoes, and part of the echo signals are received by different array elements on the ultrasonic probe. The receiving circuit in the imaging system performs low-noise amplification and depth compensation amplification on the detected weak ultrasonic echo signals, and then performs analog-to-digital conversion (A / D) to obtain digital echo signals of multiple channels. With appropriate delay control, dynamic receiving beam focu...

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Abstract

A post treatment method and a device for colorful blood flow priority coding, relates to a general image data processing technique for a real-time colorful blood flow imaging system in medical field. The method comprises the following steps of: using the dilation operation and erosion operation of mathematical morphology, directly performing two-step non-linear filtration of the binary image outputted from the priority coding or simply accumulating the number of image elements of the colorful blood flow within a certain area; and confirming one point in the area as the image space of the blood flow or as image space of tissue, or as tissue image space. The binary image outputted from the priority coding obtained from the calculation realizes the filling of black hole and elimination of isolated point. The post treatment method and the device has the advantages that on the premise of increasing small cost, the invention realizes the flatness of colorful priority coding and keep the integrated shape of blood flow not changing so as to further improve the display appearance of the colorful blood flow.

Description

technical field [0001] The present invention relates to the measurement of blood flow and blood flow velocity by ultrasound in the medical field, in particular to the general image data processing technology of a real-time color blood flow imaging system, and in particular to the direct two-step non-processing of binary images encoded with color blood flow priority. Method and apparatus for linear filtering to improve blood flow display morphology. Background technique [0002] Ultrasonic Doppler technology is widely used in the detection of blood flow or tissue movement in the human body due to its non-destructive nature. Continuous wave or pulsed wave Doppler technology can quantitatively detect the velocity of local blood flow or tissue movement. With the development of semiconductor chips and computing technology, a real-time color blood flow imaging system, commonly known as color Doppler ultrasound, has emerged. The prior art color Doppler ultrasound combines traditio...

Claims

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Application Information

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IPC IPC(8): G01S7/52A61B8/06G06T5/30
Inventor 张羽
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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