Coronary artery endovascular stent detection method and system based on OCT (Optical Coherence Tomography) image

Abstract

The invention discloses a coronary artery intravascular stent detection method and system based on an OCT image, and the method comprises the steps: obtaining an original OCT coronary artery image, and placing the image in a polar coordinate environment; the original OCT coronary blood vessel image is preprocessed, and preprocessing comprises the steps that the position of a catheter in the OCT coronary blood vessel image is detected, and a catheter area is removed; acquiring an image sequence formed in a guide wire withdrawing process, and forming three-dimensional reconstruction body data in a Cartesian coordinate environment; performing filtering enhancement on the preprocessed coronary blood vessel image by using multi-scale Frangi, and enhancing a stent shadow structure in the image; detecting the shadow position of the bracket for the enhanced image, and determining the position of the bracket; and detecting the position of the guide wire and the detected position of the stent by using the three-dimensional reconstruction volume data, segmenting a guide wire region, and removing the guide wire. According to the method, after multi-scale Frangi filtering enhancement is utilized, bracket shadow position detection and guide wire removal are carried out, the noise influence is reduced, and a high-fidelity image is obtained.

Description

technical field [0001] The invention relates to the technical field of medical image processing, and in particular, to a method and a detection system for detecting a coronary intravascular stent based on an OCT image. Background technique [0002] Globally, cardiovascular and cerebrovascular diseases have become one of the major diseases threatening human health, and coronary atherosclerosis is the main cause of cardiovascular and cerebrovascular diseases. At present, coronary stent interventional therapy has become a main treatment plan for coronary atherosclerotic disease because of its small trauma and good effect. During treatment, stents are placed inside the coronary arteries through treatment to reduce the chance of restenosis and thrombosis. [0003] Optical coherence tomography (optical coherence tomography, OCT) is the latest intravascular imaging technology for the diagnosis of cardiovascular and cerebrovascular diseases. OCT utilizes near-infrared light and is...

AI Technical Summary

Problems solved by technology

This algorithm may miss detection of brackets with inconspicuous features and weak strength, and the method of machine learning takes a lot of time, so it is still challenging to meet the real-time requirements

At present, most of the stent detection algorithms are not robust and efficient, and there are cases of multiple detection or missed detection, and there is no good solution to the influence of the guide wire

Images