Rapid 3D blood vessel boundary segmenting method and system

A blood vessel and boundary technology, applied in the fields of medical detection and medical image processing, can solve problems such as instability, low efficiency of manual segmentation, and inability to rule out lumen branches

Active Publication Date: 2017-09-05
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0011] The purpose of the present invention is to overcome the deficiencies of the prior art, provide an efficient and accurate three-dimensional segmentation method and system for bloo

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  • Rapid 3D blood vessel boundary segmenting method and system
  • Rapid 3D blood vessel boundary segmenting method and system
  • Rapid 3D blood vessel boundary segmenting method and system

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Example Embodiment

[0097] Example 1:

[0098] Such as figure 1 , Is a flowchart of the fast three-dimensional segmentation method of blood vessel boundaries implemented in the present invention. Firstly, the original OCT image is acquired and pre-processed. The pre-processing includes filtering and noise reduction and using a fixed mask to remove useless information on the periphery of the image. Then, the image is subjected to polar coordinate transformation, and the guide wire and catheter artifacts in the original OCT image are removed according to the obtained image. Then, the fast wavefront diffusion algorithm is used to find the center of the lumen in the original OCT image. According to the obtained lumen center, the polar coordinate transformation is performed, and the lumen boundary is quickly extracted by the dynamic programming method. Finally, the extracted boundary curve in the polar coordinate system is inversely transformed back to the lower boundary curve in the OCT original image...

Example Embodiment

[0181] Example 2:

[0182] Below, combine Picture 9 , The fast three-dimensional segmentation system of blood vessel boundaries of this embodiment will be described. The system includes:

[0183] Preprocessing module, preprocess the acquired image;

[0184] Coordinate transformation module 1, taking the exact center of the image as the origin of polar coordinates to convert the image into an image in the polar coordinate system;

[0185] Image artifact removal module: Determine artifacts in the image, and remove artifacts from the image converted to the polar coordinate system for determining the center of the lumen; the artifacts include catheter and guide wire artifacts;

[0186] Lumen center positioning module: determine the center of the vessel lumen in the original image;

[0187] Coordinate transformation module 2: Convert the image that determines the center of the vessel lumen, taking the center of the lumen as the origin of polar coordinates, and convert it into an image in th...

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Abstract

The invention provides a rapid 3D blood vessel boundary segmenting method and system. The system comprises a preprocessing module, a first coordinate transformation module which transforms an image into an image under a polar coordinate system, an image artifact identification module which determines an artifact in the image and generates an artifact mask image, a vessel cavity center locating module which determines a blood vessel cavity center in the original image, a second coordinate transformation module which transforms the determined image of the blood vessel cavity center into a new image under the polar coordinate system, and removes an artifact from the new image according to the artifact mask image, a vessel cavity boundary extracting module which generates an energy consumption image according to the artifact removed image and determines a blood vessel boundary of the image under the polar coordinate system, and an inverse coordinate transformation module which transforms the blood vessel boundary of the image under the polar coordinate system into a blood vessel boundary curve under the coordinate system of the original image. Thus, artifacts of guide wires and forking of blood vessels in the image can be identified and eliminated effectively, and thus, rapid accurate 3D blood vessel boundary segmentation is realized.

Description

technical field [0001] The invention relates to a blood vessel three-dimensional reconstruction method based on an optical coherence tomography image, and belongs to the field of medical image processing and medical detection technology. Background technique [0002] Optical coherence tomography (OCT) is an emerging high-resolution tomography technique. Similar to the principle of intravascular ultrasound (Intravascular Ultrasound, IVUS), this technology uses near-infrared rays as the light source, uses the interference law of light waves to perform imaging, and converts the optical signal of the beam scanning the tissue into an electrical signal, which is displayed as a gray image or a pseudo image after computer processing. 2D and 3D images of colormaps. Because the wavelength of light is shorter than that of sound waves, optical coherence tomography has higher resolution, up to 10-20um. [0003] Blood vessel segmentation and reconstruction based on optical coherence tom...

Claims

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Application Information

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IPC IPC(8): G06T7/11G06T7/13G06T11/00
CPCG06T7/11G06T7/13G06T11/008G06T2207/10101
Inventor 黄佳悦涂圣贤余炜张素
Owner SHANGHAI JIAO TONG UNIV
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