【作者】 鲁通；

【导师】 梁萍；

【作者基本信息】 中国人民解放军军医进修学院 ， 影像医学与核医学， 2007， 硕士

【摘要】 近十年来的大量研究结果表明超声引导经皮微波消融治疗肝肿瘤是一项微创、安全、有效的治疗方法，为进一步推进该技术的规范化应用，使之建立在更加客观和可预见性的基础上，便于该技术的普及应用，需解决治疗前的科学规划、治疗中的准确定位、稳定穿刺及对治疗过程的量化评估等问题。我们试图通过研制机器人辅助治疗系统来解决相应的问题。机器人辅助治疗系统是一种计算机集成治疗系统。治疗前机器人辅助治疗系统将患者的影像资料及其它信息建立为个体化的模型，辅助医生在此模型上制定最优的治疗方案；治疗中系统将治疗前的数据与治疗时的患者实体及治疗器械匹配到同一个空间中，然后通过影像导航和机器人辅助医生精确地完成治疗方案；治疗后系统还可以对治疗过程中的各项数据进行进一步的分析处理，用以科学的量化评估治疗及系统规划模型自身的不断完善。从治疗技术及需求方面而言，超声引导经皮微波消融治疗适合应用机器人辅助治疗系统，通过科学规划、实时导航和监视、精确植入等一系列方法使该治疗更加科学、可控和规范。我们相信通过机器人辅助治疗系统可以极大的提高超声引导下微波消融治疗的准确性、有效性和安全性。目前国内外尚无商品化的可以应用于超声引导消融治疗的机器人辅助治疗系统，国外仅有少数研究机构研制了初步的实验系统，因此从超声引导经皮微波消融治疗肝肿瘤为出发点，研发一套完整的超声引导消融治疗机器人系统，将有利于相关的工程研究人员和医生在此实验平台上进行更深入的研究，进而应用到临床造福于患者。本论文首先回顾和分析了机器人辅助治疗系统的相关基础理论，这些理论提供了研发机器人辅助治疗系统所需的关键技术。在此基础上建立了超声引导经皮微波消融治疗肝肿瘤的机器人辅助系统，并利用模型模拟经皮穿刺流程，进行了系列的实验研究，以验证系统的可操作性和准确性。本研究开创性完成了超声引导经皮微波消融治疗机器人系统的整体操作流程，设计了被动机器人，并进行了系列实验研究。研究表明将机器人辅助治疗系统应用于超声引导经皮微波消融治疗技术可行，并有望为临床提供一种更加稳定和准确的操作方法。更多还原

【Abstract】 Recent studies have shown that ultrasound-guided percutaneous microwave ablation is a simple, safe and potentially effective treatment for patients with liver tumors. To facilitate normative application of this technology further and make it more objective and predictive, there are many problems should been solved, such as pre-operative planning, intra-procedural target localization, precise and consistent placement of the tissue ablator device, and quantitative procedure evaluations. In response to these limitations, we propose the use of a robotic system.Robotic system for surgery is a kind of computer-integrated surgery (CIS) system. These systems transform preoperative images and other information into models of individual patients, assist clinicians in developing an optimized interventional plan, register this preoperative data to the actual patient in the operating room, and then use a variety of means, such as robots and image navigation, to assist in the accurate execution of the planned interventions. Finally, they perform complex postoperative analysis of the interventions.Ultrasound-guided percutaneous microwave ablation is an ideal setting to make use of robotic system. Improved real-time guidance for planning, delivering, and monitoring the ablative therapy would provide the missing tool needed to allow accurate and effective application of this promising therapy. It is believed that robotic system can ultimately make these procedures significantly more accurate, more effective and safer. Currently, no commercial Robotic system is applied in ultrasound-guided ablation therapy. Such systems only exist in the academic domain. So build a full robotic system would be of significant benefit to the broad community of scientists, engineers and doctors who develop these systems and use them to improve patients’ lives.In this dissertation we first present the underlying theory for the roboticsystem. This theoretical foundation provides the ability to fully specify the technologies required for the system. Building on this foundation, we design a robotic system for ultrasound-guided percutaneous microwave ablation. And then we make some initial experiments using phantoms to verify and determine the accuracy of the system.A whole work-flow of the robotic system for ultrasound-guided percutaneous microwave ablation was completed and a passive robot was designed and a series of empirical studies were made in this study. This project demonstrates that the efficacy of ultrasound-guided percutaneous microwave ablation could be enhanced with the use of robotic system and this technique may become a stable and precise method of operation for clinical therapy.更多还原