Atomic Biomagnetometer

原子生物磁强计

• 批准号: 7123764
• 负责人: THAD G WALKER
• 金额: $ 17.15万
• 依托单位: UNIVERSITY OF WISCONSIN-MADISON
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-22 至 2009-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7123764
• 关键词: Atomic; Biomagnetometer

DESCRIPTION (provided by applicant): The long-term goal of this research program is to develop an optical magnetometer for use in fetal magnetocardiography (fMCG) and fetal magnetoencephalography {fMEG) systems. We believe that the proposed magnetometer, based on a major recent discovery,represents the first viable alternative to SQUID magnetometers; thus,the potential impact of the research on the field of biomagnetism is enormous. Utilization of fMCG and fMEG has been limited by the high cost of acquisition and maintenance associated with SQUID technology. The optical magnetometer can mitigate these disadvantages while n maintaining or even surpassing the magnetic field sensitivity of SQUID magnetometers. Thus far only the high sensitivity of the device has been demonstrated. The short-term goal of the research is to construct a device that is practical for human studies, while maintaining the high magnetic field sensitivity. The specific aims are: 1. To build a optical magnetometer/gradiometer that utilizes rubidium atoms and achieves a magnetic field sensitivity 10A-14 T/(Hz)A1/2. 2. To construct a miniaturized prototype magnetometer that would be practical for fetal n magnetocardiography. 3. To evaluate the performance of the magnetometer by assessing its signal and noise characteristics and by conducting phantom studies. 4. To justify classification of the magnetometer as a nonsignificant risk by assessing and eliminating n potential safety hazards.

描述（由申请人提供）： 该研究计划的长期目标是开发用于用于胎儿副心电图（FMCG）和胎儿磁脑摄影术（FMEG）系统的光学磁力计。我们认为，根据最近的重大发现，提出的磁力计代表了鱿鱼磁力计的第一个可行替代方案。因此，研究对生物磁化领域的潜在影响是巨大的。 FMCG和FMEG的利用受到与鱿鱼技术相关的高收购和维护成本的限制。光学磁力计可以减轻这些缺点，同时n保持甚至超过鱿鱼磁力计的磁场灵敏度。到目前为止，只有该设备的高灵敏度已得到证明。该研究的短期目标是构建一种用于人类研究的设备，同时保持高磁场灵敏度。具体目的是：1。要构建利用rubidium原子并实现磁场灵敏度10A-14 T/（Hz）A1/2的光学磁力计/渐变计。 2。构建一个微型原型磁力计，该原型磁力计对胎儿N副心电图造影而言是实用的。 3。通过评估磁力计的信号和噪声特性和进行幻影研究来评估磁力计的性能。 4。通过评估和消除N潜在的安全危害，将磁力计分类视为无显着风险的合理性。