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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 method and system for automatic segmentation of the carotid artery intima-media boundary, which preprocesses an ultrasound image sequence and initializes the first frame of the sequence through rough cropping, seed point generation, and dynamic programming method processing; and establishes an image sequence. In the state space framework of segmentation, the snake algorithm is used to obtain the observations in the state space, and the Kalman filter is used to solve the state space equation to obtain the actual position of the corresponding carotid artery wall in the image; subsequent images are segmented sequentially to obtain the image segmentation result. The initialization work of the first frame of the sequence in the present invention is automatic segmentation, which truly realizes the fully automatic segmentation of the carotid artery intima-media boundary, and has a qualitative improvement in timeliness.

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
CPCG06T7/12G06T7/70G06T2207/30101G06T2207/20132G06T2207/20156G06T2207/10132G06T5/70
Inventor 李光瑞赵屾张伟顾建军
Owner SHANDONG UNIV
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