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A three-dimensional lung lobe segmentation method based on a CT image

A CT imaging, lung lobe technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as confusion and incomplete fissures

Inactive Publication Date: 2019-05-07
杭州英库医疗科技有限公司 +1
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Problems solved by technology

Additional studies have found that fissures are often incomplete in CT images and that fissures can also be confused with other fissures commonly seen in CT images

Method used

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  • A three-dimensional lung lobe segmentation method based on a CT image
  • A three-dimensional lung lobe segmentation method based on a CT image

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] as attached figure 1 As shown, a three-dimensional lung lobe segmentation method based on CT images includes the following steps:

[0027] a. Read CT image data.

[0028] Read the DICOM file, extract the header file information, and convert the gray value of the image into a CT value.

[0029] b. Perform preprocessing operations on the raw data to obtain lung parenchyma, trachea and blood vessels.

[0030] The steps to obtain the lung parenchyma are as follows: firstly, the main contour of the lung parenchyma is obtained by using the simple threshold method; secondly, the noise is removed by morphological processing; then the main trachea and the left and right main bronchi are obtained by the region generation method, and then the trachea is removed from the lung parenchyma image ; Finally, the chain code repair metho...

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Abstract

The invention provides a three-dimensional pulmonary lobe segmentation method based on a CT image, and belongs to the field of computer aided medicine. According to the method, marker-based watershedtransformation is mainly carried out in a CT image, and the lung parenchyma is subdivided into five lung lobes. The method comprises the following steps: firstly, segmenting pulmonary parenchyma, trachea and blood vessels by adopting an automatic segmentation algorithm, and generating cost images for watershed segmentation and mark points belonging to different lung lobes by utilizing the information of pulmonary parenchyma, trachea and blood vessels; And then carrying out watershed transformation on the basis of the obtained cost image and the mark point to obtain an initial lung fissure area; And finally, combining the initial pulmonary fissure area information with information of pulmonary parenchyma, trachea and blood vessels to generate a new cost image, and performing watershed transformation again to obtain a final pulmonary lobe segmentation result.

Description

technical field [0001] The invention relates to the field of computer-aided medicine, and relates to a three-dimensional lung lobe segmentation method based on CT images. Background technique [0002] In recent years, with the rapid development of modern society, increasing industrial activities, air pollution has become more and more serious, and the incidence of lung diseases is also increasing year by year. Respiratory diseases, mainly chronic obstructive pulmonary disease, rank among the highest in the mortality rate of urban residents in my country, while lung cancer has become the malignant tumor disease with the highest mortality rate in my country. Therefore, analyzing the composition and structure of the lungs and exploring the causes and development of lung diseases have important clinical significance for the diagnosis and treatment of lung diseases. [0003] The identification of lung lobes has very important applications in the evaluation of lung diseases and t...

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Application Information

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IPC IPC(8): G06T7/11G06T7/187G06T17/00
Inventor 郑军聂生东顾海洋吴文浩郭小辉张慧芳
Owner 杭州英库医疗科技有限公司
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