Blood vessel calcification false alarm detection method based on brightness analysis

A technology of brightness analysis and vascular calcification, applied in the field of medical image processing, can solve problems such as calcification false positives, and achieve the effect of avoiding false positives

Active Publication Date: 2019-06-07
数坤(北京)网络科技股份有限公司
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Problems solved by technology

[0003] For the existing calcification detection algorithm, due to the presence of contrast agents or other reasons, many calcification false positives are generated

Method used

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  • Blood vessel calcification false alarm detection method based on brightness analysis

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Embodiment

[0026] reference figure 1 As shown, the present invention discloses a method for detecting false positives of vascular calcification based on brightness analysis, including the following steps:

[0027] S1. Use a calcification detection algorithm to obtain a calcification candidate area for the blood vessel image. The calcification detection algorithm can use conventional fixed threshold, dynamic threshold, contrast or extreme value algorithms, which are not specifically limited in the present invention.

[0028] S2. Perform morphological analysis on the calcification candidate area to detect whether there is a large area of ​​calcification filling the blood vessel and whether there is a small area calcification that occurs at the bifurcation of the blood vessel;

[0029] S3. Adjust the detection threshold of large area calcification based on the brightness analysis for the condition of large area calcification filling blood vessels, and use the large area calcification detection th...

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Abstract

The invention discloses a blood vessel calcification false alarm detection method based on brightness analysis. The method comprises the following steps: obtaining a calcification candidate area by utilizing a calcification detection algorithm aiming at a blood vessel image; performing morphological analysis on the calcification candidate area, and detecting whether a large-area calcification fills blood vessels or not and whether a small-area calcification occurs at a blood vessel bifurcation or not; for the condition that the large-area calcification fills blood vessels, adjusting a large-area calcification detection threshold value based on brightness analysis, and judging whether the calcification is true or not by using the large-area calcification detection threshold value; and for the condition that the small-area calcification occurs at the blood vessel bifurcation, judging whether the calcification is true or not by raising the detection threshold value of the small-area calcification. The method firstly performs morphological analysis on the calcification candidate area to find out the candidate area where false alarm condition easily occurs, then, adjusts the detection threshold value based on brightness analysis, and discriminates and eliminates false calcification so as to effectively avoid the occurrence of false alarm condition.

Description

Technical field [0001] The invention relates to the technical field of medical image processing, in particular to a method for detecting false positives of vascular calcification based on brightness analysis. Background technique [0002] Automated coronary medical image detection has important clinical value and practical significance for doctors. It can feed back intuitive detection results for doctors, which can be used as a reference for doctors to diagnose disease and free doctors from the tedious work of interpreting medical images. This reduces the doctor’s diagnosis time, improves diagnosis efficiency, and alleviates the current difficulties in seeking medical attention. Calcification area recognition is an important part of automated coronary medical image detection. Calcification is usually manifested in medical images in that its brightness value is higher than that of surrounding blood vessels. According to this, most of the existing algorithms set a Fixed threshold ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/02G06T7/90
Inventor 肖月庭阳光郑超
Owner 数坤(北京)网络科技股份有限公司
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