Mesh-Based Segmentation of Abdominal Cavity for Patient with Cancer in CT Images

The organs with cancers in CT image deform seriously and the traditional segmentation methods cannot segment the entire chest correctly.This paper presents a 3D mesh based segmentation method.Firstly,an initial chest skeleton is found using ribs and back bones; secondly a sphere triangle mesh is constructed and the correspondence between the mesh and the chest skeleton is created; thirdly the mesh is deformed according to three objective functions; finally the mesh is refined by edge voxels near the mesh and the segmentation result is refined.Experimental results show that the proposed method can efficiently segment the seriously-deformed chest in CT image,which is robust against the noise and deformation of organs.