Study On Applications Of Virtual Reality Technology In Microsurgical Anatomy Of The Far Lateral Approach And Individual Surgical Approaches For Skull Base Tumors

1.Study on far lateral approach of local Microsurgical anatomy and virtual anatomy1.1 Objective:study of anatomical in far lateral approach applied for lesions treatment in the cranio-cervical junction Through micro-anatomy studies of the occipital muscles, vertebral artery, atlanto-cone, the foramen magnum, occipital condyle, the hypoglossal canal and other important structures,provide anatomical data for clinical application of far-lateral approach.Through the far lateral approach in the three-dimensional virtual micro- anatomy and actual comparative study of microscopic anatomy, we evaluate the the application invirtual reality technology in the far lateral approach .1.2 Methods: a total of 10 adult Wet- Dead skull specimens (20 sides). a total of 20 adult dry–dead skull specimens (40 sides) and atlas specimens 15 specimens (30 sides).First, According to far-lateral approach for surgical procedure, we dissected dead skull from outside to inside under 5-10 times enlarged by the microscope. Observation of muscle, vertebral artery, atlanto-axial, atlanto- occipital joint and the surgical approach involved an important structure Layer by layer, part of the vascular structure of bone were measured and photographed. We measuremented data of structure of bone on skull specimens and atlas specimens 30 normal adult thin sweep CT, CTA, images data loaded into Dextroscope workstations .in the virtual specimens we simulated the far-lateral approach into the path of the micro-anatomy, and measured the far-lateral surgical approach-related vascular, bone structure, and obtained the corresponding anatomical data, and analysis the data obtained by the actual anatomical structure and virtual anatomical structure.1.3 Results: Corresponding to anatomy of the data Virtual dissection group's and the actual dissection group's are a high degree of match, statistically no significant difference.1.4 Conclusion:1) Proficiency in far-lateral approach related to occipital muscles, vertebral artery, atlanto-cone, the foramen magnum, occipital condyle, the hypoglossal canal and other important structures of the microscopic anatomy of the surgery,reduce damage of vertebral artery, cranial nerve, reduce the extension of spinal cord and the maximum removal of tumors significance.2) Corresponding to anatomy of the data Virtual dissection group's and the actual dissection group's are a high degree of match, statistically no significant difference. of Virtual reality technology can comprehensive evaluate the far-lateral approach vascular and bone structure, and have application value in the far lateral approach anatomy .2.Virtual reality technology in skull base surgery2.1 Objective: we perform individualized surgical approach design by virtual reality technology in the skull base cancer patients before surgery, and evaluate the value of virtual reality technology in the skull base tumor surgery.2.2 Methods: 15 cases of skull base tumors. Preoperative acquisition MR, MRA, MRV, CTA imaging data, scan data loaded into Dextroscope workstation, formulated the detailed preoperative plan. Research the adjacent relationship of tumor and surrounding structures, developed individualized surgical approach.2.3 Results : 15 cases formulation the virtual reality surgical planning, the results of three-dimensional image clarity, true, observation comprehensive, and completed the simulation surgical of 15 cases. The images data be outputed.2.4 Conclusion: 1) Used virtual reality technology in the skull base tumor patients and helps clear the preoperative diagnosis.2) Virtual reality technology provide individual patients the pathological anatomy, as well as the lesion with the surrounding vital structures in the three-dimensional relationship and help doctors to locate and design of surgical approach.