Abstract: Objective:To reconstruct three-dimentional model of cerebral postcentral sulcus for stereotactic surgery,interventional radiology and microsurgery.Methods:The thin traverse sections of MRI data of a normal adult head was imported to 3D-Doctor workstation on a personal computer,and the postcentral sulcus,the central sulcus,the lateral ventricle,the cerebral longitudinal fissure and the cerebrum were segmented and labeled with different colors.The three-dimensional model of them was constructed in 3D-Doctor workstation with the method of surface reconstruction.Results:The three-dimentional model of the postcentral sulcus in the whole brain enabled observation of the postcentral sulcus in three-dimensional virtual space and at random angles.Conclusions:The postcentral sulcus and its related adjoining structures can be observed from the three-dimentional model,which may provide assist for interventional radiology,stereotactic surgery and neurosurgery teaching.