PHANTOM DESIGN, METHOD FOR HIGH-FIELD MRI HUMAN SYSTEMS

体模设计，高场 MRI 人体系统的方法

• 批准号: 7601627
• 负责人: Qing X Yang
• 金额: $ 4.72万
• 依托单位: UNIVERSITY OF MINNESOTA
• 依托单位国家: 美国
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2008-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7601627
• 关键词: Behavior; Characteristics; Computer Retrieval of Information on Scientific Projects Database; Dimensions; Funding; Grant; Human; Institution; Magnetic Resonance Imaging; Methods; Pattern; Penetration; RF coil; Relative (related person); Research; Research Personnel; Resources; Sample Size; Sampling; Source; System; United States National Institutes of Health; Validation; base; design

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. A phantom design method suitable for high-field MRI based on the RF field wave characteristics of sample and experimental validations at 7.0 T and 3.0 T are presented. The RF field distribution in a phantom with a given RF coil system is primarily determined by the sample size relative to the wavelength inside the sample, and the ratio between the displacement and conduction currents. Experimental results demonstrate that the MR image intensity patterns associated with wave behavior in human samples at a given field strength can be reproduced with a phantom at the same or different field strengths once the dimension and penetration constant are scaled by the corresponding wavelength in the sample medium.

该副本是利用众多研究子项目之一 由NIH/NCRR资助的中心赠款提供的资源。子弹和 调查员（PI）可能已经从其他NIH来源获得了主要资金， 因此可以在其他清晰的条目中代表。列出的机构是 对于中心，这不一定是调查员的机构。 提出了一种适用于基于样品的RF场波特征和7.0 T和3.0 T的实验验证的幻影设计方法。具有给定RF线圈系统的幻影中的RF场分布主要取决于样本量相对于样品内的波长，以及位移和传导电流之间的比率。实验结果表明，一旦样品介质中的相应波长，一旦尺寸和渗透常数缩放，就可以在相同或不同的磁场强度下以相同或不同的场强度来复制与人类样品在给定场强的人类样品中与波行为相关的MR图像强度模式。