Ultrafast Ultrasound Doppler Blood Flow Estimation Method Based on Multi-angle Plane Wave Recombination

A plane wave, multi-angle technology, applied in the field of ultra-fast ultrasonic Doppler blood flow estimation, can solve the problems of reducing the maximum detectable range of blood flow velocity of ultra-fast ultrasonic Doppler technology, reducing the pulse repetition frequency, etc., and achieving the maximum improvement The detectable range of blood flow velocity and the effect of improving the pulse repetition frequency

Active Publication Date: 2021-10-01
YUNNAN UNIV
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Problems solved by technology

However, using multiple frames of images to generate a frame of composite images, the coherent composite plane wave algorithm leads to a decrease in the pulse repetition frequency while improving the signal-to-noise ratio, thereby reducing the detectable range of the maximum blood velocity of the ultra-fast ultrasound Doppler technique

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  • Ultrafast Ultrasound Doppler Blood Flow Estimation Method Based on Multi-angle Plane Wave Recombination
  • Ultrafast Ultrasound Doppler Blood Flow Estimation Method Based on Multi-angle Plane Wave Recombination
  • Ultrafast Ultrasound Doppler Blood Flow Estimation Method Based on Multi-angle Plane Wave Recombination

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[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0042] The purpose of the present invention is to provide an ultrafast ultrasound Doppler blood flow estimation method with multi-angle plane wave repetition and compounding, which increases the pulse repetition frequency by 50%, thereby improving the maximum blood flow velocity detectable range of the ultrafast ultrasound Doppler technique.

[0043] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] figure 1 The flow chart of the ultrafast ultrasonic Doppler blood flow ...

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Abstract

The invention discloses an ultrafast ultrasonic Doppler blood flow estimating method with repeated compounding of multi-angle plane waves. The method includes: controlling the ultrasonic transducer to cyclically emit plane waves whose deflection angles are {0, β, β, β}; receiving echo signals of plane waves reflected by the area to be scanned; searching for deflection angles in the echo signals Three frames of continuous signals in sequence {0, β, β} and deflection angles in sequence {β, β, 0} to obtain multiple frame groups; superimpose the three frames of continuous signals in each frame group to obtain Composite radio frequency signal; calculate the blood flow velocity according to the composite radio frequency signal; color-code the blood flow velocity to generate a two-dimensional blood flow velocity image. In coherent compounding, the last RF echo signal is repeatedly used for the next compounding. Compared with the traditional coherent compounding technique in which all RF echo signals are only compounded once, the pulse repetition frequency is increased by 50%, thereby improving ultra-fast Ultrasound Doppler technology maximum detectable range of blood flow velocity.

Description

technical field [0001] The invention relates to the technical field of ultrasonic imaging, in particular to an ultrafast ultrasonic Doppler blood flow estimation method for repeated compounding of multi-angle plane waves. Background technique [0002] The blood flow velocity distribution in the vascular system refers to the spatial distribution of the blood flow velocity on the radial section of the vascular lumen. During the blood flow process, due to the friction between the blood vessel wall and its own viscosity, it flows in layers in the radial direction, and the flow velocity of each layer is different. Gradually decreases. In healthy blood vessels, the blood flow velocity distribution is parabolic, but in diseased blood vessels with atherosclerosis, the blood flow velocity distribution is changed due to the influence of plaque, no longer parabolic, and even turbulent and eddy currents appear. Hemodynamics is based on the distribution of blood flow velocity, and hemo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B8/06A61B8/00
CPCA61B8/06A61B8/488A61B8/5223
Inventor 何冰冰张榆锋李支尧李浩杨本贤廖泽容
Owner YUNNAN UNIV
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