Visual description method for plane streamline of heart flow field

Abstract

The invention discloses a visual description method for a plane streamline of a heart flow field. The method comprises the following steps: extracting blood flow velocity component within a two-dimensional observing plane in an acoustic beam direction on the basis of two-dimensional color Doppler ultrasound image information; through calculating a Doppler flow function and a Doppler flow distance function of a two-dimensional detection plane flow field, representing three-dimensional flowing by using a point source and a point sink; quantizing the Doppler flow distance function by using unit flow q; determining positions of the point source and the point sink according to a quantizing result and a Doppler blood flow velocity distribution situation; respectively using the point source and the point sink as a starting point and an end point of a plane streamline; and connecting the corresponding starting point and the end point according to a principle that flow function values of plane flows are equal to each other, so as to draw the plane streamline. Through the adoption of the visual description method disclosed by the invention, the motion state of the heart flow field within the detection plane can be effectively described in a visual way and solid basis is laid for effective visual observation and accurate quantitative evaluation of fluid kinetic status of the heart flow field.

Description

technical field [0001] The invention relates to the technical field of medical image processing and heart flow field motion state analysis, in particular to a method for visually describing plane streamlines of heart flow field. Background technique [0002] As the terminal expression link of the cardiac mechanical function, the movement state of the fluid in the cardiac flow field directly reflects whether the functional state of the heart is normal. Therefore, accurate analysis and evaluation of the state of fluid motion in the cardiac flow field plays a pivotal role in the accurate evaluation of cardiac function, diagnosis and treatment of cardiac diseases. No matter in the basic research of cardiology or in the clinical diagnosis of heart disease, the effective visual observation and description technology of the fluid motion state of the cardiac flow field is indispensable. However, due to the particularity of the cardiac flow field, the visual observation and descript...

AI Technical Summary

Problems solved by technology

However, there are still some limitations in the implementation of this method. For example, there are still some uncertain interference factors in the determination of the point source and point sink positions, and the non-uniqueness of the numerical calculation of the planar stream flow function, which affects the streamline of the planar stream. Drawing accuracy

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