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• W2890802328 abstract "INTRODUCTION:Ever since radiations became a part of diagnosis after the discovery of X- rays by roentgen, it has undergone so many advances and the biggest leap of them all is the transition from 2D to 3D. 3D visualization and diagnosis has been made possible by computed tomography. With the arrival of 3D in radiography, the spectrum of use has widened in that it is not only being used for visualization, there is also use of the 3 dimensional images in diagnosing, treatment planning and surgical simulation which is now becoming a more popular method. Technological advances in computerized tomography (CT) have reduced time for data acquisition and thereby reduce the exposure time and the radiation risk for the patient. Now CT data can be exported in DICOM (Digital Imaging and Communication) format which is a format accepted universally by most of the softwares for reconstruction so that CT images may be economically and quickly generated using the CAD software. With Helical CT a single exposure is enough to obtain reconstructed images in all the 3 planes, Axial, Coronal and sagittal. 3D CT was judged superior to multiplanar two-dimensional CT. CT data can be exported into a CD in DICOM format. This data can be reconstructed into a 3D virtual object/model using various softwares. In our department Materialise Mimics is used for the reconstruction of CT data, visualizing, planning and surgical simulation.AIM AND OBJECTIVE:The purpose of the study is to evaluate the efficacy of Mimics a medical based CAD software in 3D reconstruction of CT data, visualization, surgical simulation and physical model fabrication which can be used in Oral and Maxillofacial Surgery.MATERIALS AND METHOD:This study was done in the department of Oral and MaxilloFacial Surgery, Ragas Dental College and Hospital, Uthandi, Chennai.Period of study was done during September 2008 to July 2010.CT was taken for selective patients. A CAD based medical software MIMICS (Materialise, Leuven, Belgium). is used for 3D reconstruction of the acquired CT data.CT protocol.CT Scan parameter for all the patients were as follows,Vertex to Manubrium,130 kV and 81 mA/s,Slice increment 0.5mm,Width 512 pxl,Height 512 pxl,Pixel size .500 mm,Gantry tilt 0.00,Algorithm H70s.CONCLUSION:The data produced by the CT machines are a series of images. These images are printed on sheets and are viewed as conventional 2D images only and are not interactive. But through this software the CT data is now veryinteractive.A powerful processor, large virtual memory of the computer and dedicated graphics card is required.This software provides a better visualization of the anatomy and pathology, compared to conventional CT images.Accurate measurement between points and measuring of angles is possible with this software.Osteotomy, distraction and other surgical simulation can be done with this software.Splints templates and guides for intraoperative use can be fabricated. This software eliminates cumbersome procedures to the patient like facebow transfer and impression making.It is a good learning tool as it gives exact details of the anatomy.From this study we conclude that MIMICS a medical based CADsoftware is a very efficient tool in Visualization, Diagnosis, Treatment planning, Surgical Simulation and fabrication of Templates for intraoperative use in Oral and MaxilloFacial Surgery." @default.
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• W2890802328 date "2011-04-01" @default.
• W2890802328 modified "2023-09-27" @default.
• W2890802328 title "Role of Mimics a Cad Software in 3D Reconstruction of CT Data in Oral and Maxillofacial Surgery" @default.
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