SBIR Phase II: Multi-Coil Surface NMR Instrumentation and Software for 3-D Groundwater Imaging

SBIR 第二阶段：用于 3D 地下水成像的多线圈表面 NMR 仪器和软件

• 批准号: 0450164
• 负责人: David Walsh
• 金额: --
• 依托单位: VISTA CLARA INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-02-01 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0450164&HistoricalAwards=false
• 关键词: SBIR; Phase; II; Multi; Coil

This SBIR Phase II research proposal aims to develop a commercial multi-Coil Magnetic Resonance Sounding (MRS) system for 3-D groundwater imaging and characterization. The principal innovations are the use of multi-coil arrays and the development of coherent signal processing methods to reconstruct 3-D images. The feasibility of this system concept through computer simulation, analysis, and by acquiring experimental (very low SNR) multi-coil NMR data has been established. It is now proposed to design and assemble a field-scale multi-coil MRS prototype instrument with surface coil diameters on the order of 50-100 meters, and to field test this prototype extensively with the U.S. Geological Survey and a groundwater -consulting firm. This multi-coil MRS system enables a critical performance improvement in the area of spatial resolution (3-D vs. 1-D) and at least an order of magnitude improvement in sensitivity (effective SNR).Inadequate access to clean, safe, and reliable sources of drinking water is a primary cause of disease in the developing world. Inadequate access to groundwater resources, and inadequate understanding of the long-term effects of groundwater use, pose fundamental limitations on economic and agricultural development in much of the developed world, including the United States. As an inexpensive, low-energy, and non-invasive groundwater exploration method, the proposed technology could have significant positive impacts on world health, natural resource management, and economic development.

该 SBIR 第二阶段研究提案旨在开发用于 3D 地下水成像和表征的商业多线圈磁共振探测 (MRS) 系统。主要创新是使用多线圈阵列和开发相干信号处理方法来重建 3D 图像。通过计算机模拟、分析和获取实验（信噪比极低）多线圈 NMR 数据，该系统概念的可行性已经确立。现在建议设计和组装一个现场规模的多线圈MRS原型仪器，其表面线圈直径约为50-100米，并与美国地质调查局和地下水咨询公司对该原型进行广泛的现场测试。这种多线圈 MRS 系统能够在空间分辨率（3-D 与 1-D）方面实现关键性能改进，并且灵敏度（有效 SNR）至少提高一个数量级。无法充分获得清洁、安全和可靠的饮用水源是发展中国家疾病的主要原因。地下水资源获取不足以及对地下水利用的长期影响了解不够，对包括美国在内的许多发达国家的经济和农业发展构成了根本限制。作为一种廉价、低能耗、非侵入性的地下水勘探方法，所提出的技术可能对世界健康、自然资源管理和经济发展产生重大的积极影响。