肺穿刺活检手术的术前演练系统研究  

Research on Preoperative Rehearsal System for Lung Biopsy Surgery

作　　者：张玉萍 仲建全[2] 张劲[1] 何凌[1] ZHANG Yu-ping;ZHONG Jian-quan;HANG Jing;HE Ling(College of Biomedical Engineering,Sichuan University,Chengdu 610065,China;Department of Radiology,The First People's Hospital of Zigong,Zigong,643000,China)

机构地区：[1]四川大学生物医学工程学院,四川成都610065 [2]自贡市第一人民医院放射科,四川自贡643000

出　　处：《计算机仿真》2024年第1期372-379,共8页Computer Simulation

基　　金：国家自然科学基金面上项目(61571314);自贡市重点科技计划任务(2020yxy2);四川大学-宜宾市校市战略合作专项资金项目(2020CDYB-27)。

摘　　要：为解决CT引导下经皮肺穿刺活检(Percutaneous CT-guided Needle Biopsy,PCNB)对操作者要求高、术后并发症风险高等问题,设计了一个肺穿刺活检手术的术前演练系统。首先根据8位肺肿块患者CT图像分割出胸部重要器官,并基于分割结果建立病人各异的三维模型。在此基础上采用基于网格形变的方法实现穿刺过程中肺部软组织的形变模拟,并以Geomagic Touch X为基础,搭建了带有触觉反馈的肺穿刺活检术前演练环境。临床医生在行肺穿刺前使用本系统对这8位患者进行肺穿刺演练,探索合适的穿刺路径。将术前演练结果与临床实际穿刺结果对比发现两者有较好的一致性。主观问卷调查结果表明系统具有较高的真实性和易操作性。系统可用于医生进行术前演练,辅助确定合适的手术方案,提高穿刺效率和手术成功率。In order to solve the problem that the high operator requirements and risk of postoperative complications associated with percutaneous CT-guided needle biopsy(PTNB),a preoperative simulation system for lung biopsy was designed in the paper.Firstly,the important organs of the chest were segmented according to the CT images of 8 patients with lung masses,and patient-specific 3D models were built based on the segmentation results.A mesh-based deformation method was used to simulate the deformation of lung soft tissues during puncture.A preoperative rehearsal environment for lung biopsy surgery with haptic feedback was built on the basis of Geomagic Touch X.Before performing lung puncture,clinicians used this system to conduct lung puncture drils on these 8 patients and explore suitable puncture paths.Comparison of the preoperative results with the actual clinical biopsy results shows good agreement between the two.The subjective test result shows that the system has high degree of realism and ease of operation.In summary,the system can be used for preoperative rehearsals to assist in determining the appropriate surgical plan and to improve the efficiency of biopsy and the success rate of surgery.

关 键 词：肺穿刺 手术仿真 软组织形变 力反馈 人机交互接口 

分 类 号：TP319.9[自动化与计算机技术—计算机软件与理论]