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Carotid ultrasound image intima media thickness measurement method and system thereof

A technology of ultrasound image and measurement method, applied in the field of intima-media thickness measurement of carotid artery ultrasound image and intima-media thickness measurement algorithm of carotid artery ultrasound image, which can solve the problems of time-consuming and heavy workload

Inactive Publication Date: 2017-03-08
TIANJIN UNIV
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Problems solved by technology

However, this measurement method is a lot of work, very time-consuming and the final results are affected by the tester's training, personal experience and subjective judgment
The pitfalls of manual measurement prompt the development of computer-aided IMT measurement methods

Method used

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  • Carotid ultrasound image intima media thickness measurement method and system thereof
  • Carotid ultrasound image intima media thickness measurement method and system thereof
  • Carotid ultrasound image intima media thickness measurement method and system thereof

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Embodiment Construction

[0079] The purpose of the present invention is to propose a reliable and automatic carotid artery ultrasonic image measurement algorithm, which uses computer-aided measurement to avoid the defects of manual measurement. Based on this purpose, aiming at the current research status at home and abroad, the present invention adopts the level set algorithm to initially segment the measurement image, and introduces the Markov model to transform the image segmentation problem into a process of assigning a label to each pixel.

[0080] The invention combines the characteristics of the ultrasonic carotid artery image, and can effectively complete the work of segmenting the carotid artery image and measuring the IMT during the test process of the given image library, and has good theoretical and application value.

[0081] In order to achieve the above object, the present invention adopts the following technical solutions:

[0082] 1) Image cropping. Information about the patient and t...

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Abstract

The invention relates to the carotid ultrasound image processing field and provides a reliable and automatic carotid ultrasound image measurement method. In the method, a mode of using a computer to assist the measurement is adopted so as to avoid a defect existing in a manual measurement mode. In the technical scheme, the carotid ultrasound image intima media thickness measurement method comprises the following steps of 1) carrying out image cutting, cutting and removing irrelevant information and only keeping a blood vessel portion; 2) automatically extracting a region of interest ROI (region of interest); 3) carrying out image filtering and filtering a plaque noise brought by echo reflection; 4) carrying out horizontal set segmentation; 5) initializing a mark field; 6) carrying out resegmentation; 7) carrying out postprocessing, postprocessing a segmented image, removing an error-dividing small area, acquiring a finally-segmented image, LII and MAI, and measuring intima media thickness. The method and the system are mainly applied to carotid ultrasound image processing.

Description

technical field [0001] The invention relates to the field of carotid ultrasound image processing, in particular to an intima-media thickness measurement algorithm for carotid ultrasound images. Specifically, it relates to a method and system for measuring intima-media thickness in carotid ultrasound images. Background technique [0002] Intima Media Thickness (IMT) of the carotid artery wall in ultrasound imaging can be used as an important index to evaluate the early lesion degree of cardiovascular diseases, and it is of great value in the diagnosis and prevention of sudden myocardial infarction and stroke. Traditionally, the intima-media thickness of carotid ultrasound images is usually measured manually, and the measurer manually draws the lumen-intima interface (LII) and media-adventitia boundary (Media-adventitia) in the image. Adventitia Interface, MAI), and then obtain the IMT by calculating the distance between the two boundaries. However, this measurement method r...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/34G06K9/32
CPCG06V40/10G06V40/14G06V10/25G06V10/267
Inventor 张琦珺关欣李锵滕建辅
Owner TIANJIN UNIV
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