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Ultrasonic endocardium tracing method

An intracardiac and ultrasound technology, which is applied in the field of image processing and can solve the problems of inability to perform boundary and accurate positioning.

Inactive Publication Date: 2014-02-19
SHENZHEN EMPEROR ELECTRONICS TECH
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Problems solved by technology

[0008] The purpose of the embodiments of the present invention is to provide an ultrasonic endocardial tracing method, which solves the problem of inability to accurately locate the boundary in the prior art

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  • Ultrasonic endocardium tracing method
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  • Ultrasonic endocardium tracing method

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Embodiment Construction

[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0034] The main principle of this method is to use the curve evolution theory, combined with the image edge information evolution curve; define the geodesic distance on the image edge indicator function, define the energy functional of the geodesic distance of the closed curve; use the variational method to find the image domain The minimum value of the energy functional can be obtained by its Euler-Lagrange partial differential equation, and the level set method can be used to solve this equation to obtain the corresponding level set evolution equation; the minimum value of the energy functio...

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Abstract

The invention is applicable to the fields of medical treatment and image processing and provides an ultrasonic endocardium tracing method. The ultrasonic endocardium tracing method comprises the steps of receiving a general endocardium boundary manually drawn by a tracer in a heart B ultrasonic image, wherein the endocardium boundary is an initial closed curve; selecting a first pixel at an upper left corner of the B ultrasonic image as a seed point and obtaining an initial mask after seed point departs to enter the Flood Fill depth-first search process; adopting a distance conversion method to obtain a signed distance function of the initial mask, using the signed distance function as a level set and enabling a zero level set to correspond to the initial closed curve; generating an edge indicator function; performing evolution iteration on the level set to obtain an iterated level set and obtaining a zero level set in the iterated level set, wherein the iterated zero level set is an ultrasonic endocardium. The ultrasonic endocardium tracing method has the advantages of improving boundary positioning accuracy.

Description

Technical field [0001] The invention belongs to the field of image processing, and particularly relates to an ultrasound endocardial tracing method. Background technique [0002] "Ultrasound endocardial tracing" refers to the process in which the user draws the approximate boundary of the cardiac endocardium in the B-ultrasound image of the heart, and then uses this method to generate the precise boundary of the cardiac endocardium. [0003] In the process of using B-ultrasound to diagnose heart diseases, the shape and size of the endocardium can be used as an important basis for diagnosing lesions. Therefore, the accuracy of image processing of the endocardium is very important. Clinically, it is helpful for the detection of the endocardium. For the early diagnosis of coronary heart disease and accurately calculate the ventricular volume. The manual endocardial tracing method is based on the subjective judgment of the examiner, which is very time-consuming, and its application pr...

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Application Information

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IPC IPC(8): G06T7/00
Inventor 刘秀坚周传涛
Owner SHENZHEN EMPEROR ELECTRONICS TECH
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