Physics-based virtual environment for training in vascular interventional radiological procedures

用于血管介入放射手术培训的基于物理的虚拟环境

• 批准号: EP/E002587/1
• 负责人: Nigel John
• 金额: $ 43.58万
• 依托单位: Bangor University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FE002587%2F1
• 关键词: Physics; based; virtual; environment; training

The aim of this project is to develop a computer generated virtual environment (VE) with variable virtual anatomy, in which the appearance, 'feel' and human factors of invasive radiological procedures (interventional radiology, IR) in patients can be reproduced and assessed.IR is keyhole surgery using needles, specialised wires and tubes (catheters), guided by touch and imaging (x-ray, 'Cat Scan'--CT, ultrasound). IR benefits from local anaesthesia, a tiny incision, few complications, reduced postoperative pain, short hospital stay and low cost. Most IR procedures commence with needle puncture of a blood vessel to insert guide wires and catheters: these clinical skills are acquired by all radiologists during training, as an apprenticeship in patients, inevitably associated with some discomfort and occasionally, complications. 'Straightforward' cases for diagnosis are ideal for training but are being replaced by state-of-the-art, non-invasive imaging methods. While some skills (mainly visual skills, relating to orientation and spatial negotiation) can be acquired using models (as in surgery), these have limitations for IR which relies heavily on a sense of touch. Both patients and trainees would benefit from the use of computers to create a VE with devices conveying touch sensation (haptics) to realistically mimic procedures on patients. Removal of this initial experience from the clinical environment would be time efficient while improving patient safety and reducing the time taken for medical trainees to attain and maintain higher levels of competence.The key aims of this project are to:1. develop and validate a complete VE for training in vascular interventional radiology, encompassing needle puncture as well as guidewire and catheter insertion and manipulation. This is the overarching objective of this project and will be based on a task analysis of interventional procedures.2. develop methods of semi-automatically processing medical imaging data to create a variable range of 3D geometry of anatomy.3. determine and localise the forces experienced by an operator during IR procedures in patients using miniature sensors, enabling the 'feel' of a real procedure to be accurately reproduced.4. simulate needle puncture, and introduction of a guidewire and catheter into a blood vessel, with realistic behaviour of tissue and vessels.5. reproduce the feel of a pulse to guide instrumentation of an artery using a novel device which mimics a patient's physiological pulse.6. simulate ultrasound to guide needle puncture of an artery, and fluoroscopy to guide guidewire and catheter manipulation within an artery.7. validate the VE and assess its potential for training and certification. We will also make suggestions for inclusion in curricula and criteria for certification.The VE developed in this project will be generic, capable of incorporation into an existing system, or of forming the basis of a new generation of systems applicable to training. The work will be undertaken by researchers at the Universities ofLiverpool, Bangor, Hull, Leeds and Imperial; the PI (Gould) is an interventional radiologist with extensive clinical research experience and who will be the overall project co-ordinator. The technical project manager is a Computer Science professor (John) whose Research Assistant will also assist in project management. This proposal accords with the aims of EPSRC in introducing improvements in health and will also enhance economic development and stimulate interest in the sciences.

这个项目的目的是开发一个具有可变虚拟解剖结构的计算机生成的虚拟环境(VE)，在其中可以再现和评估患者的侵入性放射学程序(介入放射学，IR)的外观、感觉和人为因素。介入放射学是指在触摸和成像(X光、‘Cat Scan’--CT、超声波)的引导下，使用针、专门的电线和管(导管)进行的锁孔手术。IR具有局部麻醉、小切口、并发症少、术后疼痛轻、住院时间短、费用低等优点。大多数IR手术始于针刺血管以插入导丝和导管：这些临床技能是所有放射科医生在培训期间获得的，作为患者的学徒，不可避免地会伴随一些不适，有时还会出现并发症。“直截了当”的诊断案例是培训的理想之选，但正在被最先进的非侵入性成像方法所取代。虽然一些技能(主要是与方位和空间谈判有关的视觉技能)可以通过模型(如外科手术)获得，但对于严重依赖触觉的IR来说，这些技能有局限性。患者和受训者都将受益于使用计算机创建一种带有传递触觉(触觉)的设备的VE，以逼真地模拟患者的操作过程。从临床环境中去除这种最初的经验将是一种时间效率，同时提高患者的安全性，并减少医学实习生获得和保持更高水平的能力所需的时间。该项目的主要目标是：1.开发和验证用于血管介入放射学培训的完整VE，包括针刺、导丝和导管插入和操作。这是本项目的总体目标，将以介入程序的任务分析为基础。开发半自动处理医学成像数据的方法，以创建可变范围的3D解剖几何。使用微型传感器确定并定位操作者在IR手术过程中所感受到的力，从而能够准确地再现真实手术的“感觉”。模拟针刺，将导丝和导管插入血管，模拟组织和血管的真实行为。使用一种模拟患者生理脉搏的新型设备，重现脉搏的感觉，以指导动脉器械的安装。模拟超声波引导动脉穿刺针，模拟透视引导动脉内的导丝和导管操作。验证VE并评估其培训和认证的潜力。我们还将建议将VE纳入课程和认证标准。在这个项目中开发的VE将是通用的，能够纳入现有系统，或形成适用于培训的新一代系统的基础。这项工作将由利物浦大学、班戈大学、赫尔大学、利兹大学和帝国大学的研究人员承担；PI(古尔德)是一名具有丰富临床研究经验的介入放射科医生，将担任整个项目的协调人。技术项目经理是一位计算机科学教授(约翰)，他的研究助理也将协助项目管理。这一建议符合EPSRC改善健康的目标，也将促进经济发展和激发人们对科学的兴趣。

项目成果

Real-time Seldinger technique simulation in complex vascular models.

复杂血管模型中的实时 Seldinger 技术模拟。

• DOI: 10.1007/s11548-009-0376-0
• 发表时间: 2009
• 期刊: International journal of computer assisted radiology and surgery
• 影响因子: 3
• 作者: Luboz V

Computational Requirements of the Virtual Patient

虚拟患者的计算要求

• 发表时间: 2009
• 期刊: First International Conference on Computational and Mathematical Biomedical Engineering
• 作者: John NW