| ObjectiveOptimization of mandibular angle CT image acquisition method.By esta blishing virtual reality navigation space for the fast segmentation of 3D data field,the establishment of mandibular angle osteotomy and visualiz ation of 3D shape database,improve the diagnostic criteria of mandibular angle hypertrophy,when the mandibular angle osteotomy 3D measurement da ta entered into the database,on the establishment-of the mandible virtua 1 reality operation model were measured and analyzed.To explore the rela tionship between parameters of the mandibular angle measurement,provide 3D software platform and the data of the mandibular angle osteotomy safe range sample source for mandibular angle osteotomy surgery navigationMethods1.The MIMICS10.0,Geomagic Studio13.0 software mandibular angle osteotomy 3D model is established.Using MyPatients software development,database for management software of visual operation interface of windows,mandibular angle osteotomy model database framework construction,general epidemic disease of mandibular angle osteotomy data data entry,query field,information view,establish specific suitable search field and rapid patient data retrieval,with three-dimensional data access,on clinical data thereby achieve rapid browsing analysis,through the acquisition of the mandibular angle osteotomy 3D data to construct a three dimensional visualization model,preoperative communication with patients is more intuitive,with convincing.Of the research group in 2012 to 2015 period all admissions to the need of the mandibular angle osteotomy in patients with a total of 56 cases by spiral CT scanning.The dials data through the MIMICS10.0 software import images into the software,the head of 3D reconstruction,main task is mandibular angle osteotomy model reconstruction,virtual mandibular angle osteotomy and inferior alveolar neurovascular bundle divided body reconstruction.The three dimension reconstruction model reconstruction of mandible model virtual mandible osteotomy and the split reconstruction technology to establish the inferior alveolar nerve three-dimensional digital model of the,mandibular angle virtual osteotomy and measurement of preoperative and postoperative mandibular angle and mandibular angle valgus angle and mandibular 1 branch height,mandibular angle between width and mandibular angle of mandibular osteotomy indicators.The results were statistically analyzed,using t test and other statistical methods for statistical analysis2.To optimize the mandibular angle CT image acquisition method,compare the difference between 16 slice spiral CT and 64 slice spiral CT in the image,to determine and optimize the CT scan parameters of the mandibular angle osteotomy.3.All patients underwent whole spiral CT plain scan,including bone tissue and soft tissue.The data were recorded and read DICOM data using MIMICS10.0 software for data reconstruction and 3D measurement.Data processing:data entry using Excel2013 and SPSS18.0 statistical software for statistical analysis,mandibular angle osteotomy simulation and virtual osteotomy measured before operation and after the length of body of mandible,mandibular body height,thickness of the mandibular body,height of the mandibular ramus,mandibular angle and mandibular tube distance,branch height,mandibular angle between width and mandibular angle mandibular angle and mandibular angle valgus angle and mandibular ramus and the data were preliminary processing of the data analysis.The measurement data of normal distribution with mean + standard deviation said by independent samples t test,P<0.05,the difference was statistically significant.Results1.The establishment of the database is professional database for the mandibular angle osteotomy surgery navigation of virtual reality model construction,the main database data is imaging information for the patients with 3D reconstruction for 3D measurements obtained data,then through the specific conditions into the database,database definition retrieval field as far as possible comprehensive coverage of the mandibular osteotomy bone patients basic information,examination data,data measurement,digital photos,3D scanning image,3D reconstruction image and so on.Development of the database established mandibular angle osteotomy surgery navigation virtual reality model of the module of data management center,including patient management,general management,inspection data and measurement data of patients with mandibular angle osteotomy in information retrieval,data statistics and analysis of information and automation,for the future of computer aided mandibular angle surgery navigation data accumulation the clinical data,accumulated to achieve a certain degree after data mining,before and after the operation decision support system to provide information and 3D digital 3D data base,provide data support for the study of mandibular angle surgery navigation,provide the optimization for the registration of surgical navigation with CT static image data in operation.2 to determine the safety of mandibular angle osteotomy line on the three-dimensional image,to construct a three-dimensional digital model of mandibular angle osteotomy,and to guide the operation of mandibular angle osteotomy.3.The mandibular body length,mandibular angle valgus angle,mandibular body height,thickness of the mandible,mandibular ascending branch height,mandibular angle between width and mandibular angle,height of the mandibular ramus,mandibular angle and mandibular tube distance,mandibular angle angle can be an important reference for the evaluation of mandibular angle osteotomy effect observation index and face contour younger modified value.Conclusion1.The establishment of the database is professional database for the mandibular angle osteotomy surgery navigation of virtual reality model construction,the main database data is imaging information for the patients with 3D reconstruction for 3D measurements obtained data,then through the specific conditions into the database,database definition retrieval field as far as possible comprehensive coverage of the mandibular osteotomy bone patients basic information,examination data,data measurement,digital photos,3D scanning image,3D reconstruction image and so on.Development of the database established mandibular angle osteotomy surgery navigation virtual reality model of the module of data management center,including patient management,general management,inspection data and measurement data of patients with mandibular angle osteotomy in information retrieval,data statistics and analysis of information and automation,for the future of computer aided mandibular angle surgery navigation data accumulation the clinical data,accumulated to achieve a certain degree after data mining,before and after the operation decision support system to provide information and 3D digital 3D data base,provide data support for the study of mandibular angle surgery navigation,provide the optimization for the registration of surgical navigation with CT static image data in operation..2 to determine the safety of mandibular angle osteotomy line on the three-dimensional image,to construct a three-dimensional digital model of mandibular angle osteotomy,and to guide the operation of mandibular angle osteotomy.3.The mandibular body length,mandibular angle valgus angle,mandibular body height,thickness of the mandible,mandibular ascending branch height,mandibular angle between width and mandibular angle,height of the mandibular ramus,mandibular angle and mandibular tube distance,mandibular angle angle can be an important reference for the evaluation of mandibular angle osteotomy effect observation index and face contour younger modified value. |
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