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IV-OCT blood vessel contour recognition method based on uniqueness of tube wall connected domain

A technology of connected domains and blood vessels, applied in the field of fully automatic morphological recognition of lumen contours, can solve problems such as poor shooting conditions and difficulty in extracting lumen contours, and achieve low signal-to-noise ratio effects

Active Publication Date: 2021-02-02
TIANJIN UNIV
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Problems solved by technology

This method overcomes the difficulty in extracting the outline of the lumen caused by the excessive residual blood in the vessel caused by poor shooting conditions and the close contact between the catheter and the lumen of the vessel in the existing method

Method used

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  • IV-OCT blood vessel contour recognition method based on uniqueness of tube wall connected domain
  • IV-OCT blood vessel contour recognition method based on uniqueness of tube wall connected domain
  • IV-OCT blood vessel contour recognition method based on uniqueness of tube wall connected domain

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Embodiment Construction

[0059] The present invention is based on the recognition method proposed by reference 14, and its steps are simplified to a certain extent, some steps are inherited and improved, and a new processing method is proposed. The present invention inherits the basic image processing methods such as the morphological opening operation used by it; abandons the algorithm of dynamic segmentation; improves the method of morphological direction and area detection and the method of signal retrieval by secondary recognition, and is developed in Dajin Based on the binarization of the method, the processing of partitioning and judging the existence of the vessel wall is proposed; in addition, a new method of removing residual blood and catheters based on the uniqueness of the connected domain of the vessel wall on the A-line is proposed, which effectively improves The recognition rate and the robustness of the method are improved.

[0060] Such as figure 1 As shown, the lumen outline automat...

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Abstract

The invention provides an intravascular optical coherence tomography intravascular wall contour automatic identification method. The method comprises the following steps: (1), processing an original image Ori; (2), identifying the inner contour of a blood vessel wall, including morphological direction and shape detection; performing morphological opening operation; excluding a non-pipe-wall connected domain; performing segmenting when the catheter is connected with the catheter wall; reconstructing an incomplete contour; and retrieving the mistakenly removed signal; and (3), performing coordinate transformation.

Description

technical field [0001] The present invention relates to endoscopic optical coherence tomography (Intravascular Optical Coherence Tomography, IV-OCT) covering cardiovascular, cerebrovascular and other endoscopic OCT imaging fields, especially to an IV-OCT based on the unique extraction of the connected domain of the vessel wall on the A-line - Fully automatic morphological recognition method for lumen contours of OCT vascular images. Background technique [0002] Endoscopic optical coherence tomography is a catheter-based high-resolution imaging technique that uses near-infrared light to obtain the microstructure of the inner wall of living blood vessels. With its high resolution and high sensitivity, it can realize intravascular imaging, and can clearly display the structural features, tissue features, and even cell features of atherosclerotic plaques, and has been widely used in clinical interventional cardiology and cerebrovascular medicine. Vascular lumen contour recogni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/13G06T7/136G06T5/30G06T5/00
CPCG06T7/13G06T7/136G06T5/30G06T2207/20032G06T2207/20036G06T2207/30101G06T2207/10101G06T2207/10068G06T5/77
Inventor 丁振扬朱丰裕刘铁根刘琨江俊峰陶魁园李清瑞朱亚楠商明健胡景淇
Owner TIANJIN UNIV
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