Fully automatic 3D algorithm of pulmonary parenchyma segmentation

The precise three-dimensiona(l3-D) segmentation of pulmonary parenchyma from thorax X-ray computed tomography(CT)images is essential for the detection of pulmonary diseases.The complex 3-D structure of breast tissues in CT images makes precise segmentation difficult.A fully automatic 3-D segmentation algorithm is presented,which based on threshold,region growing and improved wavefront simulation model for extracting the 3-D pulmonary parenchyma from a X-ray CT dataset.The new algorithm is applied on the Computer Vision and Image Analysis Group/International Early Lung Cancer Action Program(VIA/I-ELCA) and Lung Image Database Consortium(LIDC) database.The results indicate that the algorithm is fast and precise for pulmonary parenchyma segmentation.