The First Mummy Range Workshop in Electrical Impedance Tomography

第一届木乃伊范围电阻抗断层扫描研讨会

• 批准号: 0138498
• 负责人: Jennifer Mueller
• 金额: $ 1.88万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0138498&HistoricalAwards=false
• 关键词: First; Mummy; Range; Workshop; Electrical

Electrical Impedance Tomography (EIT) is a medical imaging technique in whichlow levels of current are applied through electrodes on the surface of thebody, the resulting voltage is measured on the electrodes, and an inverseproblem is solved computationally to determine the conductivity distribution inthe interior. In EIT the imaged region is often a cross-section of the body, such asa patient's chest. The tissues and organs in the body have differentconductivities, a fact which enables one to form an image from theconductivity distribution. There is an essential interplay in EIT between engineering and mathematics. The design of a fast and accurate EIT system poses many engineering challenges. Mathematics has helped solve design issues such as what are the optimal current patterns to apply, what number and size of electrodes should be used, and what measurement precision is need to distinguishinhomogeneities. In order to image human processes in real time, the reconstruction algorithms that solve the inverse problem must be very efficient. Furthermore, for certain applications, such as distinguishing a breast tumor from a cyst, the reconstructed conductivity values must be accurate. The design of reconstruction algorithms draws on many areas of mathematics including partial differential equations, analysis and complex variables,mathematical modeling, numerical analysis, and scientific computation.The goal of the Mummy Range Workshop in Electrical Impedance Tomography is to bring together mathematicians, engineers, and physicians working in EIT to increase the communication between the groups and address current problems in design issues, applications, and reconstruction algorithms. To the organizers' knowledge, this is the first conference in EIT specifically designed to bring together these groups. The workshop will be held at the Pingree Park Campus of Colorado State University, a conference center located in the Mummy Range of the Rocky Mountains. By bringing these groups together, we hope to expand theclinical applications of EIT and push the technology forward in terms of systemdesign and reconstruction algorithms. Several important existing clinical applications of EIT include monitoring heart and lung function, diagnosis ofpulmonary embolis (a blood clot in the lung), diagnosis of pulmonary edema, monitoring for internal bleeding, and the early detection of breast cancer.Groups attending the workshop will be presenting work on these applications and others such as imaging changes in the brain during epilepsy and stroke and monitoring of cancer tissue during hyperthermia by impedance spectroscopy. Several groups are presenting work on the design of new systems for specific applications such as breast cancer detection, and novel reconstruction algorithms will be presented. The workshop website is http://www.eitworkshop.org.

电阻抗断层成像(EIT)是一种医学成像技术，它通过人体表面的电极施加低水平的电流，在电极上测量产生的电压，然后通过计算解决逆问题，以确定体内的电导率分布。在EIT中，成像区域通常是身体的横截面，例如患者的胸部。人体内的组织和器官具有不同的电导率，这一事实使人们能够根据电导率分布形成图像。在EIT中，工程学和数学之间存在着重要的相互作用。快速、准确的EIT系统的设计提出了许多工程挑战。数学已经帮助解决了设计问题，例如什么是应用的最佳电流模式，应该使用什么数量和大小的电极，以及区分不均匀所需要的测量精度。为了对人体过程进行实时成像，求解逆问题的重建算法必须非常高效。此外，对于某些应用，例如区分乳腺肿瘤和囊肿，重建的电导值必须是准确的。重建算法的设计涉及许多数学领域，包括偏微分方程组、分析和复变量、数学建模、数值分析和科学计算。电阻抗断层成像木乃伊范围研讨会的目标是将从事EIT工作的数学家、工程师和医生聚集在一起，以增加小组之间的沟通，并解决当前设计问题、应用和重建算法中的问题。据组织者所知，这是EIT中第一次专门设计将这些团体聚集在一起的会议。研讨会将在科罗拉多州立大学平瑞公园校区举行，这是一个位于落基山脉木乃伊山脉的会议中心。通过将这些小组聚集在一起，我们希望扩大EIT的临床应用，并在系统设计和重建算法方面推动该技术的发展。EIT现有的几个重要临床应用包括监测心肺功能、诊断肺血栓(肺部的一种血块)、诊断肺水肿、监测内出血和乳腺癌的早期发现。参加研讨会的小组将介绍这些应用和其他方面的工作，如癫痫和中风期间大脑的成像变化，以及通过阻抗频谱监测热疗期间的癌症组织。几个小组正在为乳腺癌检测等特定应用设计新系统，并将提出新的重建算法。研讨会的网站是http://www.eitworkshop.org.