Three-dimensional virtual-reality surgical planning and soft-tissue prediction for orthognathic surgery

Authors:
James Xia;H. H.S. Ip;N. Samman;H. T.F. Wong;J. Gateno;Dongfeng Wang;R. W.K. Yeung;C. S.B. Kot;H. Tideman
Affiliations:
Oral & Maxillofacial Surg. Dept., Hong Kong Univ., China;-;-;-;-;-;-;-;-
Venue:
IEEE Transactions on Information Technology in Biomedicine
Year:
2001

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Abstract

Complex maxillofacial malformations continue to present challenges in analysis and correction beyond modern technology. The purpose of this paper is to present a virtual reality workbench for surgeons to perform virtual orthognathic surgical planning and soft-tissue prediction in three dimensions. A resulting surgical planning system, i.e., three-dimensional virtual reality surgical planning and soft-tissue prediction for orthognathic surgery, consists of four major stages: computed tomography (CT) data post-processing and reconstruction, three-dimensional (3-D) color facial soft-tissue model generation, virtual surgical planning and simulation, soft-tissue-change preoperative prediction. The surgical planning and simulation are based on a 3D CT reconstructed bone model, whereas the soft-tissue prediction is based on color texture-mapped and individualized facial soft-tissue model. Our approach is able to provide a quantitative osteotomy-simulated bone model and prediction of postoperative appearance with photorealistic quality. The prediction appearance can be visualized from any arbitrary viewing point using a low-cost personal computer-based system. This cost-effective solution can be easily adopted in any hospital for daily use.