摘要
为了提高肝癌手术治疗计划的可靠性,在利用腹部CT图像数据进行肝脏三维重建的基础上,实现了任意角度对虚拟肝脏进行平面切割和切割面结构的显示;通过构造可以调节大小、位置的球体模型,实现了球体切除;通过在肝脏三维模型表面上勾画不规则封闭区域,实现了任意曲面肝脏切除;并依据肝内血管结构进行肝段划分,实现了解剖性肝段切除.临床实验结果表明,文中所述的技术能够满足虚拟手术的需求,有利于医生制定安全可靠的术前计划,提高手术成功率.
In order to improve the reliability of liver surgery planning, three-dimensional reconstruction of liver is created based on the data set of abdominal CT images. Two types of virtual liver resection are presented in this paper, i. e. , atypical resection and anatomical resection. Atypical resection can be realized in three modes： plane resection, sphere resection, and curved surface resection. Cutting plane provides plane resection from any angle and the visualization of the structures on the cutting surface. Sphere model can be parameterized and transformed to resect the surrounded region. Closed curve can be drawn manually to define the resection region on the surface of the reconstructed liver model. Liver segments are marked according to the structure of the liver vessel, and anatomical resection is realized by removing the assigned segments. The results of clinical trials indicate that the virtual liver resections provide a reasonable and useful basis for preoperative planning, and improve the success rate of surgery.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2012年第3期330-335,共6页
Journal of Computer-Aided Design & Computer Graphics
基金
国家自然科学基金(30770561
60701022
61001144
61102137)
关键词
虚拟肝脏
CT
三维重建
肝脏切除
virtual liver
CT
three-dimensional reconstruction
liver resection
