BACKGROUND: It remains hard to judge characterization of lesion tissues using two-dimensional sectional image at present. Medical three-dimensional reconstruction technique could obviously improve work efficiency and accuracy of medical working staff on disease diagnosis.
OBJECTIVE: To develop a three-dimensional medical visualization system can rebuild three-dimensional model of corresponding parts by reading DICOM data, and observe the appearance of affected hip joint using reconstructed models.
METHODS: A three-dimensional (3D) medical visualization system was developed using the MFC in a PC with Windows XP operating system, development environment VC++6.0, VTK 5.6 installation, and necessary settings were made. Precise procedures are as follows: ① create a drawing object; ② create a drawing window, and draw objects was added in draw window; ③ read the CT image sequences, and set the path of the read image sequence; ④ isosurface (generate triangular facets) were extracted using MC algorithm, depending on the gray, skin and bones. Data of the input image sequence were set; gray value of tissue contour was set; ⑤ the establishment of a V-belt objects and data mapping object; ⑥ graphics rendering, to receive the properties of the geometric data, and a different colors and transparency of bones and skin were set; ⑦ the viewing position was set to observe the position of the object and focus; ⑧ to create a human-computer interaction function.
RESULTS AND CONCLUSION: VC++6.0 and VTK could meet the needs of medical 3D visualization systems development. Developed 3D visualization system software could perform 3D reconstruction through reading CTimages of DICOM format files. Thus, the relevant parts of the reconstructed 3D model could be observed by rotating, zooming, and panning so as to visually observe the bone structure of hip joint, fractured appearance andtype. It provided a reference for relevant therapy and operation.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

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