Developing a Computerized Training Tool for Cryosurgery

开发冷冻外科计算机化培训工具

• 批准号: 7993067
• 负责人: YOED RABIN
• 金额: $ 31.87万
• 依托单位: CARNEGIE-MELLON UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7993067
• 关键词: Algorithms; Area; Attention; Basic Science; Cancerous; Case Study; Characteristics; Clinical; Computational Technique; Cryosurgery; Data; Data Set; Data Storage and Retrieval; Databases; Development; Device or Instrument Development; Devices; Education; Elements; Evaluation; Feedback; Focused Ultrasound Therapy; Foundations; Freezing; Future; Generations; Health; Heating; Image; Imagery; Imaging Device; Imaging Techniques; Lasers; Learning; Magnetic Resonance Imaging; Manufacturer Name; Medical; Methodology; Mission; Modality; Modeling; Monitor; NIH Program Announcements; Nature; Operative Surgical Procedures; Organ; Outcome; Procedures; Process; Prostate; Recording of previous events; Research; Research Personnel; Research Proposals; Resolution; Scheme; Shapes; Simulate; Source; Staging; Sum; Surface; Surgeon; Techniques; Technology; Temperature; Time; Tissues; Training; Training and Education; Transducers; Ultrasonography; United States National Institutes of Health; Virtual Tool; Work; base; clinical application; computer generated; computerized; cryobiology; database design; design; experience; falls; graphical user interface; improved; instrumentation; microwave electromagnetic radiation; minimally invasive; operation; reconstruction; rectal; simulation; success; three-dimensional modeling; tool; tumor; virtual

DESCRIPTION (provided by applicant): Cryosurgery is the destruction of undesired tissues by freezing. Despite the continuous development of devices and techniques for minimally invasive cryosurgery, modern cryosurgery frequently falls short of maximizing cryodestruction to the target region, while minimizing cryoinjury to the surrounding tissues. Here, one of the most significant difficulties - and probably the less intuitive obstacle to overcome - is the design and generation of a frozen region to adequately correlate with the shape of the target region and established criteria for cryosurgery success. This project focuses on medical training and education associated with planning and creation of the optimal 3D thermal field for cryosurgery, for the benefit of the surgeon, the medical researcher, and the clinical instrumentation developer. A computerized training tool is developed in this project, the objectives being to shorten the clinician's learning curve, reduce practice time, enable case studies of "what-if" scenarios, and to enable revaluation of past clinical procedures via a cryosurgery database. While the training tool is designed for general purposes, due to its high clinical relevancy, a particular attention is given to prostate cryosurgery. The training tool consists of three modules: database, simulator, and tutor; the development of each represents one specific aim of the overall research plan. The database consists of three types of datasets: (i) volumetric images obtained from an imaging device such as ultrasound, (ii) reconstructed 3D target region models, and (iii) surgical- procedure outcomes, subject to specific surgical parameters such as number and type of cryoprobes, cryoprobe layout, cryoprobe freezing capabilities, and the resulting temperature field history. The simulator imitates the bioheat transfer process and its imaging with a standard ultrasound technique. Based on the simulated process, the tutor interactively guides the trainee to identify the optimal cryoprobes layout. The tutor may be used for planning future procedures or reevaluation of past cases, while further increasing the size of the database. Consistent with NIH Program Announcement (PA) PAR-07-344 - in the specific area of "Surgery and Virtual Tools"- this project integrates computational techniques for simulation of the surgical procedure, including the imaging effects unique to freezing, and predictions of the bioheat transfer process in the clinically treated area. Emphasis is placed on cryosurgery database design, data retrieval, visualization and graphical interfaces, where the database includes imaging data, geometrical modeling of the target region, cryodevice characteristics, and thermal field history. This project utilizes rapid simulation techniques for bioheat transfer, and recently developed algorithms for computerized planning of cryosurgery. The broader impact of this training tool can potentially far exceed its specific application to cryosurgery, by applying similar methodology to other thermal modalities in surgery, such as focused ultrasound, microwave, laser probes, and other multi-source heating elements. PUBLIC HEALTH RELEVANCE: The objective of this project is to develop a computerized training tool for minimally invasive cryosurgery, which is the destruction of undesired tissue, such as cancerous tumors and organs, by freezing. The training tool is comprised of three modules: (i) a simulator of the cryosurgery procedure for a specific clinical setup; (ii) a tutor to evaluate and systematically improve the quality of the procedure for a given clinical setup; and, (iii) a database to record tutorial sessions, as well as past clinical cases, for the purpose of ongoing education. Development of this training tool is directed toward shortening the learning curve for cryosurgeons by performing virtual cryosurgery cases, and enabling reevaluation of past clinical cases.

描述（由申请人提供）：冷冻手术是通过冷冻破坏不需要的组织。尽管微创冷冻手术的设备和技术不断发展，但现代冷冻手术常常无法最大限度地对目标区域进行冷冻破坏，同时最大限度地减少对周围组织的冷冻损伤。在这里，最重要的困难之一 - 可能是难以克服的不太直观的障碍 - 是冷冻区域的设计和生成，以与目标区域的形状和冷冻手术成功的既定标准充分相关。 该项目侧重于与规划和创建冷冻手术最佳 3D 热场相关的医疗培训和教育，以造福于外科医生、医学研究人员和临床仪器开发人员。 该项目开发了一种计算机化培训工具，目标是缩短临床医生的学习曲线，减少实践时间，实现“假设”场景的案例研究，并通过冷冻外科数据库重新评估过去的临床程序。虽然培训工具是为通用目的而设计的，但由于其高度的临床相关性，特别关注前列腺冷冻手术。 训练工具由数据库、模拟器、导师三大模块组成；每一项的发展都代表了总体研究计划的一个具体目标。该数据库由三种类型的数据集组成：(i) 从超声等成像设备获得的体积图像，(ii) 重建的 3D 目标区域模型，以及 (iii) 手术结果，取决于特定的手术参数，例如数量和数量。冷冻探针类型、冷冻探针布局、冷冻探针冷冻能力以及由此产生的温度场历史。该模拟器使用标准超声技术模拟生物热传递过程及其成像。根据模拟过程，导师以交互方式指导学员确定最佳冷冻探针布局。导师可用于规划未来的程序或重新评估过去的案例，同时进一步增加数据库的大小。 与 NIH 计划公告 (PA) PAR-07-344 一致 - 在“手术和虚拟工具”的特定领域 - 该项目集成了用于模拟手术过程的计算技术，包括冷冻独有的成像效果以及对手术过程的预测。临床治疗区域的生物热传递过程。重点是冷冻外科数据库设计、数据检索、可视化和图形界面，其中数据库包括成像数据、目标区域的几何建模、冷冻装置特性和热场历史。 该项目利用生物热传递的快速模拟技术，以及最近开发的冷冻手术计算机化规划算法。通过将类似的方法应用于手术中的其他热模式，例如聚焦超声、微波、激光探头和其他多源加热元件，该培训工具的更广泛影响可能远远超出其在冷冻手术中的具体应用。 公共健康相关性：该项目的目标是开发一种用于微创冷冻手术的计算机化培训工具，即通过冷冻来破坏不需要的组织，例如癌性肿瘤和器官。该培训工具由三个模块组成：(i) 针对特定临床设置的冷冻手术程序模拟器； (ii) 导师评估并系统地提高给定临床设置的程序质量； (iii) 一个数据库，用于记录辅导课程以及过去的临床病例，以供持续教育之用。 该培训工具的开发旨在通过执行虚拟冷冻手术病例来缩短冷冻外科医生的学习曲线，并能够重新评估过去的临床病例。