脾脏的三维重建和脾切除可视化仿真手术的应用研究

Study on three dimensional reconstruction and simulation surgery of spleen

目的研究64排螺旋cT脾脏扫描数据的三维重建和脾切除的可视化仿真手术。方法采集脾脏64排螺旋CT的原始扫描数据，通过自适应区域生长算法对CT序列图像进行图像程序分割和自动提取，再采用自行研发的图像处理软件对分割后的图像进行三维重建，然后导人Free Form Modeling System中修饰、平滑并进行脾切除术前的可视化仿真手术的研究。结果自适应区域生长算法进行脾脏图像程序分割速度快、效果好，可获得满意的脾脏分割数据；三维重建出来的图像结构清晰，可真实再现脾脏和周围重要器官及管道的结构；脾切除的仿真手术效果接近实际手术。结论脾脏CT数据三维重建和可视化仿真手术的研究应用可以让手术者对脾脏周围的三维解剖结构在手术前能够有清晰的了解，对降低手术风险、减少手术并发症，提高手术效果有很大的帮助。

Objective To study the three-dimensional（3D） reconstruction and the visualization simulation surgery, of spleen based on the scanning data of 64-slice helical computed tomograph （CT）. Methods The original data of 64-slice helical CT of spleen was collected, and then the CT image sequences were segmented and automatically extracted using auto-adapted region growth algorithm, and were conducted with the segmented images by adopt self-developed image processing software for 3D reconstruction. Finally, the 3D models were imported into FreeForm Modeling System for modifying and smooth. And the visualization simulation surgery was performed before splenectomy. Results It was fast and effective to utilize auto-adapted region growth algorithm to conduct spleen image program segmentation; the reconstructed models were seen clearly and could reappear the structure of the spleen and the important surrounding organs. The effect of the splenectomy simulation surgery was similar to the practical surgery. Conclusions The research on 3D models of spleen and visualization simulation surgery of splenectomy could lead to clinical benefits. It maybe improve the surgical effect and decrease the surgical risk and reduce the complication demonstrating visualized operation before surgery.