Portable C-scan Ultrasound for Rapid Vascular Access

用于快速血管通路的便携式 C 扫描超声

• 批准号: 7108418
• 负责人: Karen E Morgan
• 金额: $ 15万
• 依托单位: POCKETSONICS
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-06-01 至 2008-09-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7108418
• 关键词: allied health personnel; bioimaging /biomedical imaging; biomedical equipment development; cardiovascular disorder therapy; cardiovascular imaging /visualization; catheterization; clinical research; computer graphics /printing; computer human interaction; evaluation /testing; health care personnel performance; human subject; image enhancement; image guided surgery /therapy; interactive multimedia; peripheral blood vessel disorder; phantom model; portable biomedical equipment; ultrasound

DESCRIPTION (provided by applicant): The goal of this research and development is to save lives and improve quality of care of people requiring vascular access by enabling quicker access and minimizing failed attempts. Achieving rapid vascular access is critical in many cases where rapid administration of IV fluids or medications can alter patient outcomes. This Phase I proposal seeks funding to support the development of a low-cost (<$2,000 per unit), easy to use, and highly portable C-Scan ultrasonic imaging system called the Sonic Window. This system will be comparable in size to a mobile phone or PDA and is designed to meet the needs of users with no experience in medical imaging at a fraction of the cost of currently available portable ultrasound systems. The C-scan format combined with the compact display integrated at the transducer allows the user to see the image in the perspective that would be obtained if you had a clear 'window' through the skin into the tissue or vessel of interest. The Sonic Window is being realized by combining a low profile 2D array, custom integrated circuits, novel beamforming and image processing algorithms implemented on a commercial Digital Signal Processor and a LCD display. Innovative technological approaches are employed to circumvent conventional engineering wisdom that holds that C-Scan (image plane parallel to skin surface) imaging is inherently more complex and costly than B-Scan imaging (plane perpendicular to skin surface). The specific aim of this Phase I research is to test the hypothesis that the C-scan image format and the display integrated with the transducer will make it easier and faster for novice ultrasound users to perform ultrasound-guided vascular access procedures. This hypothesis will be tested using a study with an inanimate ultrasound model in which paramedics use the Sonic Window system for guiding rapid peripheral IV access. These procedures will be compared directly to those guided by a state-of-the-art commercial B- Scan portable ultrasound system designed for vascular access applications. Paramedics are chosen for this study because they do not have significant prior exposure to the use of ultrasound but are trained in obtaining peripheral IV catheterization. Before this study can begin, we will complete integration of the prototype Sonic Window system and perform system validation and optimization. A positive conclusion from this study, demonstrating that this prototype is faster and easier to use, will provide increased confidence in the commercial feasibility for the Sonic Window product. In future stages of development, we will extend this work to include human studies as well as demonstrate the effectiveness of the Sonic Window for guiding more complicated access procedures such as central line insertions. This research is a collaborative effort between PocketSonics, Inc. and the University of Virginia Departments of Biomedical Eng. and Electrical and Computer Eng.

描述（由申请人提供）：这项研究和开发的目标是通过实现更快的访问和最大程度地减少失败的尝试来拯救生命并提高需要血管访问的人的护理质量。在许多情况下，实现快速血管通路至关重要，因为快速静脉注射液体或药物可能会改变患者的治疗结果。该第一阶段提案寻求资金支持开发一种低成本（每台<2,000 美元）、易于使用且高度便携的 C 扫描超声成像系统，称为 Sonic Window。该系统的尺寸与手机或 PDA 相当，旨在满足没有医学成像经验的用户的需求，而成本仅为当前便携式超声系统的一小部分。 C 扫描格式与集成在传感器上的紧凑型显示屏相结合，使用户能够以通过皮肤进入感兴趣组织或血管的清晰“窗口”所获得的视角查看图像。 Sonic Window 是通过将薄型 2D 阵列、定制集成电路、新颖的波束形成和在商用数字信号处理器和 LCD 显示器上实现的图像处理算法相结合来实现的。采用创新技术方法来规避传统的工程智慧，即 C 扫描（平行于皮肤表面的图像平面）成像本质上比 B 扫描成像（垂直于皮肤表面的平面）更复杂且成本更高。该第一阶段研究的具体目的是测试以下假设：C 扫描图像格式和与换能器集成的显示器将使超声新手用户更容易、更快速地执行超声引导血管通路手术。这一假设将通过一项无生命超声模型的研究进行检验，在该模型中，护理人员使用声波窗口系统来引导快速外周静脉注射。这些程序将直接与专为血管通路应用而设计的最先进的商用 B 扫描便携式超声系统引导的程序进行比较。护理人员被选用于这项研究，因为他们之前没有大量接触过超声波的使用，但接受过外周静脉导管插入术的培训。在本研究开始之前，我们将完成原型 Sonic Window 系统的集成并进行系统验证和优化。这项研究的积极结论表明该原型速度更快、更易于使用，这将为 Sonic Window 产品的商业可行性提供更大的信心。在未来的发展阶段，我们将扩展这项工作以包括人体研究，并展示声波窗口在指导更复杂的接入程序（例如中心线插入）方面的有效性。这项研究是 PocketSonics, Inc. 和弗吉尼亚大学生物医学工程系之间的合作成果。以及电气和计算机工程。