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Combined application of virtual surgery and 3D printing technology in postoperative reconstruction of head and neck cancers

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Figure

Table 1 Characteristics of five patients in this study
Fig. 1 a CT shows the range of tumor invasion (cross section); b MRI shows the range of tumor invasion (cross section); c Surgical simulationwhich using gestures to pick up, rotate, zoom, model resolution, profile and other operations by VR technology
Fig. 3 a CT transect showed that the lesion infiltrated into the left vestibule area, involving the nasal septum and the nasal floor; b Three-dimensional reconstruction of maxillofacial region, bone defect; c and lower extremity vessels by CAD technique after CT angiography; dComputer simulation for repair of maxillofacial region; e The position, length, arc of the fibula and the angle of the osteotomy of the fibula usedby computer simulation and repair; f The effect of computer simulation after repair; g Three-dimensional printers’ rapid prototyping model; h Theleft maxillary tumor resection (resection including the left maxillary sinus wall, inferior wall, anterior wall, the section on the right side of themaxillary sinus and inferior wall, by simultaneous resection of nasal septum and nasal tumor infiltrating the bottom); i The skin flap was designedas the center of the skin before operation, and the skin of the left calf was cut into the perforator to dissect the perforating branch of theperoneal artery; j Vascularized free fibula myocutaneous flap was made by truncated fibula; k Repair effect of vascularized free fibulamyocutaneous flap during operation
Fig. 4 Preoperative performance and computer simulation of patients, model of rapid prototyping by 3D printer, one-stage repair of mandibularCustomize the osteotomy plate according to the model after the rapid prototyping, determine the interception range
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