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A method for enhancing optical coherence tomography image in cardiovascular system

A technology of optical coherence tomography and image enhancement, which is applied in image enhancement, image analysis, image data processing, etc., to achieve the effect of optimizing contrast coefficient and enhancing depth information

Active Publication Date: 2018-08-21
TIANJIN UNIV
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Problems solved by technology

[0003] The present invention provides a kind of optical coherence tomography image enhancement method in cardiovascular, and the present invention overcomes existing cardiovascular image depth information enhancement algorithm to change three kinds of different lesion plaques (calcified plaque, fibrous plaque, lipid plaque) in the original image Plaque) attenuation coefficient problem, a contrast enhancement and depth gain algorithm by optimizing the contrast coefficient is proposed to realize the enhancement of deep information, while the attenuation coefficient of different lesion plaques will not change drastically and will not cause damage to the front end of the internal scaffold. shadow

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  • A method for enhancing optical coherence tomography image in cardiovascular system
  • A method for enhancing optical coherence tomography image in cardiovascular system
  • A method for enhancing optical coherence tomography image in cardiovascular system

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[0038] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, and the described specific embodiments are only for explaining the present invention, and are not intended to limit the present invention.

[0039] like figure 1 As shown, a kind of intravascular optical coherence tomography image enhancement method proposed by the present invention, the method comprises the following steps:

[0040] Step 1. Contrast enhancement is performed on each A-Line of the OCT original image in polar coordinates collected by the OCT imaging system in the cardiovascular system to obtain image I en (z):

[0041]

[0042] In formula (1), z represents the depth, I(z) and I en (z) respectively represent the light intensity values ​​before and after the contrast enhancement at the depth z in the original image, and the contrast is increased by an exponential enhancement method, n is an ex...

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Abstract

The invention discloses a cardiovascular optical coherence tomography image enhancement method. Image depth information enhancement for cardiovascular optical coherence tomography in the visual effect can be realized through a traditional method which changes pathologic characteristics of an image, and pathologic characteristics analysis of a doctor is interfered, e.g., changes of cardiovascular plaque characteristic attenuation coefficients and generation of intra-tissue bracket front shadow. The method employs a depth gain algorithm optimizing contrast coefficients to enhance intra-tissue depth information for a cardiovascular optical coherence tomography image, so depth information enhancement is realized, and violent attenuation coefficient change and generation of intra-tissue bracket front shadow can be avoided.

Description

technical field [0001] The present invention relates to optical coherence tomography (Optical Coherence Tomography, OCT) in the cardiovascular system, which belongs to the field of cardiovascular imaging, and in particular to an OCT cardiovascular image that enhances image depth information without causing drastic changes in the attenuation coefficient of lesions and tissue internal stents. Method for front shadows. Background technique [0002] Intravascular OCT imaging technology is the cardiovascular imaging method with the highest image resolution at present. It can accurately display the ultrastructure in blood vessels, identify unstable coronary atherosclerotic plaques and thrombus, and assist in the detection of vascular stents in coronary interventional therapy. Placement, evaluation of postoperative stent implantation effect, and observation of stent intimal hyperplasia and coverage in the late stage of implantation are extremely important applications. The quality...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00A61B5/00
CPCA61B5/0033A61B5/0066A61B5/0084G06T5/00G06T2207/10101G06T2207/20172G06T2207/30048G06T2207/30101
Inventor 丁振扬刘铁根周永涵陶魁园刘琨江俊峰
Owner TIANJIN UNIV
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