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目的 研究基于64排螺旋CT扫描数据的三维重建和胰腺可视化仿真手术.方法 采集常见胰腺病变的CT扫描数据.通过自适应区域生长法对CT序列图像进行程序分割和提取,采用自行研发的医学图像处理软件对分割后的图像进行三维重建.再将数据以STL格式导入FreeForm Modeling System中修饰、平滑,利用GHOST SDK软件开发出各种仿真手术器械,然后运用PHANTOM力反馈设备进行各种常见胰腺疾病的可视化仿真手术的研究.结果 利用自适应区域生长法对胰腺和脾脏CT图像进行程序分割速度快、效果好.用自行设计的医学图像处理软件进行三维重建,图像结构清晰,可真实再现胰腺的解剖结构,有如在手术台上直接操作、真实手术的感觉.结论 基于64排螺旋CT扫描数据的三维重建和可视化仿真手术,对胰腺等腹部脏器的个体化手术方案制定、风险评估、临床教学训练等方面都有很高的应用价值.

Study on application of three-dimensional reconstruction and visual simulation surgery to pancreas based on the data of 64-row helical CT scanning

??Objective:To study application of three??dimensional reconstruction and visual simulation surgery on pancreas based on the data of 64-row helical computed tomograph (CT) scanning. Methods:To collect the data of pancreatopaphy on 64-row helical CT scanning,the automatic extraction and segment were carried on to the CT sequence images based on the algorithm of auto adapted region growing.The images which had been segmented were proceeded the 3D reconstruction by medical image proceeding system which was designed by us.Then reconstructed objectives were imported into FreeForm Modeling System in the form of STL format to embellish and smooth.Using the GHOST SDK software of FreeForm Modeling System Various instruments were developed.Investigate the visual simulation surgery of pancreas with PHANTOM software. Results:It is rapid and effective that the image sequence segmentation of pancreas is applied by the algorithm of auto adapted region growing.The 3D reconstruction result of pancreas by medical image processing software show clearly and has vivid appearance.The visual simulation surgery of pancreas is high simulated,vivid,exact and give the feeling of ‘strength’ and make people feel operating a real surgery on an operation table. Conclusion:3D reconstruction and simulation surgery based on helical CT scanning has important application value on the operation planning selection,risk assessment and clinical training.