Hemodynamic visualization method based on ultrasonic spectral Doppler and system for implementing same

A technology of hemodynamics and spectrum, applied in blood flow measurement devices, ultrasonic/sonic/infrasonic diagnosis, medical science, etc., can solve the problems of high computational cost of 3D rendering, inability to directly obtain visual 3D imaging, etc., and achieve non-real-time And real-time blood flow measurement is convenient, the observation is intuitive, and the precision is high.

Active Publication Date: 2018-05-29
SASET CHENGDU TECH LTD
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Problems solved by technology

On the one hand, the calculation cost of 3D rendering is relatively high, and on the other hand, it is...

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  • Hemodynamic visualization method based on ultrasonic spectral Doppler and system for implementing same
  • Hemodynamic visualization method based on ultrasonic spectral Doppler and system for implementing same
  • Hemodynamic visualization method based on ultrasonic spectral Doppler and system for implementing same

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[0026] In the following, the present invention will be further described in detail in conjunction with the accompanying drawings and embodiments, so as to make the purpose, technical solutions and advantages of the present invention more clear. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] In order to realize intuitive and rapid visualization of hemodynamic parameters, the embodiment of the present invention realizes the visualization of hemodynamic parameters through a method based on surface rendering, and realizes the visualization of various velocity sets (for example, blood flow obtained based on Doppler spectrum). 3D visualization of hemodynamic parameters such as mean velocity, minimum velocity, maximum velocity, central velocity and specific range of velocity, etc.), variance and energy. Using three-dimensional surface images to display hemodynamic parame...

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Abstract

The invention discloses a hemodynamic visualization method based on ultrasonic spectral Doppler and a system for implementing the same. The method and the system have low calculation quantity, low consumption of storage resources and high accuracy of measurement results and allow specific hemodynamic parameters to be visually and quickly presented. The method comprises: acquiring sampling gate data, and performing ultrasonic scanning according to selected sampling gate depth; subjecting echo signals to beam forming according to the position of a sampling gate so as to obtain an RF (radiofrequency) signal; dividing the sampling gate into multiple sub-sampling gates; calculating spectral data in each sub-sampling gate to obtain three-dimensional spectral data; processing each voxel in a volume data field formed by the three-dimensional spectral data, acquiring an iso-surface of each voxel, and calculating a normal vector of each iso-surface; using a set lighting model to calculate lightintensity; performing three-dimensional surface drawing and rendering according to the calculated light intensity to generate a three-dimensional surface image.

Description

technical field [0001] The invention relates to the technical field of ultrasound imaging, in particular to a hemodynamic visualization method and system based on ultrasound spectrum Doppler. Background technique [0002] Color flow imaging is to color-code the distribution of blood flow velocity in the body for real-time display. In the application of medical ultrasonic cardiovascular disease detection, by providing the direction, velocity and turbulence information of blood flow, the flow velocity and velocity distribution of blood flow can be determined, so as to assist doctors in diagnosis. Traditional blood flow imaging generally uses time-domain correlation methods to obtain blood flow velocity, variance, energy and other parameters that characterize the blood flow state, and then provides color-coded imaging to users. The disadvantage of the traditional method is that the blood flow information obtained is the average information in a certain area, and it is difficul...

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Application Information

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IPC IPC(8): A61B8/06A61B8/00
CPCA61B8/06A61B8/488A61B8/5223
Inventor 刘西耀石丹王立刘东权
Owner SASET CHENGDU TECH LTD
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