A carotid artery intima-media boundary automatic segmentation method and system

An automatic segmentation and carotid artery technology, which is applied in image analysis, image enhancement, instruments, etc., can solve the problems of reducing user workload, reducing practicability, and insufficient robustness, and achieves time and labor costs. Improvement of timeliness and accuracy

Active Publication Date: 2020-08-07
SHANDONG UNIV
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Problems solved by technology

Due to the interference factors such as image noise, dynamic characteristics of IM boundaries, and inter-observer differences, this work is still very challenging, and fully automatic segmentation techniques for ultrasound images need to be developed to minimize the user's workload
[0005] At present, the above-mentioned carotid artery segmentation technology can only process a single ultrasound image, but cannot process a continuous ultrasound image sequence, and most of them are semi-automatic segmentation, and the timeliness is not high enough.
In addition, many methods can only better deal with ideal images with less noise, the robustness is not strong enough, and the practicability is greatly reduced.

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  • A carotid artery intima-media boundary automatic segmentation method and system
  • A carotid artery intima-media boundary automatic segmentation method and system
  • A carotid artery intima-media boundary automatic segmentation method and system

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Embodiment Construction

[0035] The present invention will be further described below with reference to the drawings and embodiments.

[0036] It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0037] It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate There are features, steps, operations, devices, compon...

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Abstract

The invention discloses a carotid artery intima-media membrane boundary automatic segmentation method and system. According to the method and system, an ultrasound image sequence is preprocessed, andinitialization of the first frame of the sequence is realized through rough clipping, seed point generation and dynamic programming method processing; a state space framework for image sequence segmentation is established, a snake algorithm is adopted to acquire an observed quantity in a state space, and a Kalman filter is used to solve a state space equation to obtain the actual position of a corresponding carotid artery wall in the image; and subsequent images are sequentially segmented to obtain an image segmentation result. Through the method and system, the initialization work of the first frame of the sequence is automatic segmentation, full-automatic segmentation of a carotid artery intima-media membrane boundary is realized in a true sense, and timeliness is improved qualitatively.

Description

Technical field [0001] The invention relates to an automatic segmentation method and system for the carotid artery intima-media boundary. Background technique [0002] Segmenting the carotid artery IM (intima-media) boundary from ultrasound images, and then observing the changes of carotid artery IMT (intima-media thickness) during the cardiac cycle is important for the discovery, prevention and prognosis of cardiovascular diseases significance. [0003] Ultrasound imaging is usually used to examine the biomechanical properties of the carotid artery intima-media, segment the carotid artery IM (intima-media) boundary from the ultrasound image, and then observe the carotid artery IMT (intima-media thickness) during the cardiac cycle ) Changes are of great significance to the discovery, prevention and prognosis of cardiovascular diseases. The core task of carotid artery ultrasound image segmentation is to use the corresponding edge extraction algorithm to completely extract the IM b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/12G06T5/00G06T7/70
CPCG06T5/002G06T7/12G06T7/70G06T2207/10132G06T2207/20132G06T2207/20156G06T2207/30101
Inventor 李光瑞赵屾张伟顾建军
Owner SHANDONG UNIV
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