Method and device for extracting pulmonary lobe from chest CT image

Abstract

The invention discloses a method and device for extracting a pulmonary lobe from a chest CT image and relates to the technical field of a computer. The method can obtain pulmonary lobe tissues through a pulmonary parenchyma extraction process based on 3D region growth, a left and right lung adhesion trachea removal process based on region features, a pulmonary vascular root removal process, a pulmonary vascular center path extraction process based on topological thinning and a pulmonary lobe segmentation algorithm based on support vector classification. The method can accurately extract the pulmonary lobe from the chest CT image, can accurately finish quantitative evaluation of illness degree of each pulmonary lobe and is more accurate and effective for diagnosis and treatment of lung diseases.

Description

Technical field [0001] The invention belongs to the field of computer technology and relates to a method and device for extracting lung lobes from chest CT images. Background technique [0002] CT (Computed Tomography) uses a precisely collimated X-ray beam and a highly sensitive detector to scan a certain part of the human body one by one. Different gray levels indicate the degree of X-ray absorption by organs and tissues. For example, on a chest CT image, low-density areas indicate trachea and lung parenchyma, and high-density areas indicate blood vessels, thoracic cavity, bones, etc., which have the characteristics of fast scanning time and clear images, which can be used for inspection of various diseases. Doctors observe and diagnose diseases to provide a convenient and reliable basis. [0003] Because CT equipment can obtain clear CT images of the chest, the use of CT images has become a main method for diagnosing chronic obstructive pulmonary disease. However, the current m...

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Problems solved by technology

[0003] Because CT equipment can obtain clear chest CT images, the use of CT images has become a major means of diagnosing COPD. However, the current medical level can only achieve quantitative diagnosis of a single lung. Evaluation cannot be done

The treatment of COPD usually requires lung lobe volume reduction surgery, but quantitative assessment of lung volume reduction cannot be performed before surgery, which will inevitably affect the treatment effect of COPD

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