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Method for establishing simulated three-dimensional blood vessel stenosis analysis model

A technology of vascular stenosis and analysis model, which is applied in the field of establishing a simulated three-dimensional vascular stenosis analysis model, can solve the problems of inability to obtain the analysis data of the degree of vascular stenosis intuitively and quickly, and the positioning and analysis of unfavorable vascular lesion areas, so as to achieve easy positioning and display, facilitate intuitive observation, and improve the effect of registration accuracy

Inactive Publication Date: 2021-03-16
XIAN CREATION KEJI CO LTD
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Problems solved by technology

[0004] However, from the images obtained by the above imaging methods, it is impossible to obtain the analysis data on the degree of vascular stenosis intuitively and quickly, which is not conducive to the clinical positioning and analysis of the vascular lesion area.

Method used

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  • Method for establishing simulated three-dimensional blood vessel stenosis analysis model
  • Method for establishing simulated three-dimensional blood vessel stenosis analysis model
  • Method for establishing simulated three-dimensional blood vessel stenosis analysis model

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Experimental program
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Embodiment approach

[0116] An optional implementation of step S31 includes:

[0117] Perform gray-scale linear transformation on each registered bright blood image to obtain K contrast-enhanced bright blood images;

[0118]In the embodiment of the present invention, according to the characteristic that the blood is high signal in the bright blood image and the surrounding tissue is low signal, the gray scale linear transformation is performed on the registered bright blood image, and the gray scale range of the image is adjusted to achieve the purpose of improving the image contrast.

[0119] For example, the grayscale linear transformation and parameter settings used in a bright blood image after registration are as follows: figure 2 as shown, figure 2 It is a schematic diagram of grayscale linear transformation and parameter setting provided by the embodiment of the present invention. use figure 2 The gray scale linear transformation shown can extend the smaller range of gray value change...

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Abstract

The invention discloses a method for establishing a simulated three-dimensional blood vessel stenosis analysis model. The method comprises the following steps: acquiring a bright blood image group andan enhanced black blood image group of a blood vessel part; performing image registration on each bright blood image by using a registration method based on mutual information and an image pyramid bytaking the corresponding enhanced black blood image as a reference to obtain a registered bright blood image group; establishing a blood vessel simulation three-dimensional model by using the registered bright blood image group; segmenting each section of blood vessel in the blood vessel simulation three-dimensional model from three preset directions to obtain a two-dimensional sectional drawingof each direction; performing corrosion operation on the blood vessel in the two-dimensional sectional drawing in each direction, and recording the target corrosion times when the blood vessel is corroded to a single pixel; obtaining a numerical value of a target parameter representing the stenosis degree of the section of blood vessel according to the target corrosion times respectively corresponding to the section of blood vessel in the three directions; and marking the blood vessel simulation three-dimensional model by utilizing the values of the target parameters of each section of blood vessel to obtain a simulated three-dimensional blood vessel stenosis analysis model.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a method for establishing a simulated three-dimensional blood vessel stenosis analysis model. Background technique [0002] Vascular stenosis refers to the thickening of vessel wall and narrowing of vessel lumen caused by atherosclerosis, trauma or other congenital factors, leading to the symptoms of ischemia in organs or tissues dominated by vessels. Coronary artery stenosis can lead to coronary heart disease; carotid artery stenosis and intracranial artery stenosis can lead to cerebral infarction and cerebral ischemia; lower extremity arterial stenosis can lead to lower extremity arteriosclerosis obliterans, such as ischemic symptoms in the feet. [0003] At present, methods based on lumen imaging are usually used to evaluate the degree of vascular lesions clinically, such as digital subtraction angiography (Digital Subtraction Angiography, DSA), CT angiography (Comp...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/13G06T7/33G06T5/30G06T11/00G06T17/00G16H30/20
CPCG06T7/0012G06T7/13G06T7/344G06T5/30G06T11/003G06T17/00G16H30/20G06T2207/20016G06T2207/20024G06T2207/30101G06T2211/424
Inventor 贾思琪
Owner XIAN CREATION KEJI CO LTD
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