Pulmonary nodule locating system and method for 3D pulmonary surface projection

Abstract

The invention discloses a pulmonary nodule locating system for 3D pulmonary surface projection. The system comprises a CT data importing unit, a CT image segmentation unit, a 3D modeling unit, a nodule projection unit and a measurement unit, wherein the CT data importing unit used for importing CT data; the CT image segmentation unit comprises a pulmonary tissue organ segmentation module, a nodule segmentation module, a blood vessel segmentation module and a segmentation module; the 3D modeling unit is used for building 3D models of a pulmonary tissue organ, a nodule and a blood vessel of each segment, and fusing the models into a pulmonary tissue 3D model; the nodule projection unit is used for building an expansion model of the pulmonary nodule, and the expansion model is the extension of the pulmonary nodule to the pulmonary surface; and the measurement unit is used for measuring a distance between the expansion model and anatomical characteristics identifiable for naked eyes on the surface of the pulmonary tissue 3D model. The invention furthermore discloses a pulmonary tissue model 3D printing method. According to the system and the method, the pulmonary nodule can be intuitively and accurately located on the premise of no traumas, so that the pains of patients are relieved and the pulmonary nodule wedge resection operation under a thoracoscope is more accurate, safer and more popular.

Description

technical field [0001] The invention relates to the technical field of medical image processing, in particular to a 3D lung surface projection pulmonary nodule positioning system and method. Background technique [0002] Lung cancer is one of the most common malignant tumors. The morbidity and mortality of lung cancer are on the rise all over the world, especially in developing countries. The incidence of lung cancer in my country is increasing by 26.9% every year, and lung cancer has become the first cause of death from malignant tumors in my country. The treatment effect of lung cancer is closely related to the stage of cancer when it is discovered. Clinical studies in thoracic surgery have shown that the 5-year survival rate of AIS and MIA treated with minimally invasive surgery such as wedge resection or segmentectomy is close to 100%; even for stage I lung cancer, the 10-year survival rate after surgical treatment can reach more than 90%. Therefore, the focus of break...

AI Technical Summary

Problems solved by technology

At present, preoperative puncture positioning needle (Hook-wire) is used for preoperative positioning of small pulmonary nodules. The main disadvantage is that it is an invasive operation, which increases the pain of patients. If abnormalities occur after anesthesia, patients cannot tolerate it. After undergoing surgery, the positioning needle that has been punctured and fixed on the lung tissue is difficult to remove without surgery, and the patient cannot tolerate the continued surgery and is very passive

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