DESIGN AND CONSTRUCTION OF A NOVEL 600MHZ NMR MAGNET

新型 600MHZ 核磁共振磁体的设计和构造

• 批准号: 3498460
• 负责人: ROGER WHEATLEY
• 金额: $ 4.62万
• 依托单位: HIMAG, INC.
• 依托单位国家: 美国
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-01 至 1990-10-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3498460
• 关键词: biomedical equipment resource; magnetic resonance imaging; nuclear magnetic resonance spectroscopy

The long term goal of this research is to produce a shorter geometry high field magnet that will be useful to the imaging researcher as well as the high resolution NMR spectroscopist at a lower cost than currently available designs. Advances in NMR microscopy and MR imaging of solids demands increased field strength for improvement of the signal to noise ratio and hence increased sensitivity. Design of a superconducting Nb3Sn insert for an existing NbTi outer magnet using a new jointing technique will enable a stable short magnet to evolve. Following feasibility studies of the new jointing technique the phase 2 goal is to produce a 600MHz,1H frequency magnet based on a four coil geometry rather than the end corrected, sixth order long solenoid traditionally used for high resolution NMR magnets. The larger bore of the four coil geometry will permit the insertion of gradient coils for imaging purposes while leaving reasonable space for the probe and sample. A prerequisite for the four coil geometry is a solution to the overall joint length problem, described below. It is also the intention that this research will result in a lower cost 600MHz magnet than the existing system that is available from only one non USA company at a list price of $624,000.

这项研究的长期目标是产生较短的几何形状 对成像研究人员以及 高分辨率NMR光谱学家的成本低于目前可用的 设计。 NMR显微镜和MR成像的进展 提高野外强度以改善信号与噪声比和 因此，灵敏度提高。 现有NBTI外磁铁的超导nb3sn插入物的设计 使用新的接头技术将使稳定的短磁铁能够进化。 遵循对新接合技术的可行性研究，第2阶段 目标是基于四个线圈产生600MHz，1H的频率磁铁 几何而不是末端校正，第六阶长螺线管 传统上用于高分辨率NMR磁铁。 较大的孔 四个线圈几何形状将允许插入梯度线圈进行成像 在为探针和样品留出合理空间时的目的。 四个线圈几何形状的先决条件是对整体的解决方案 关节长度问题，如下所述。 这也是这样的 研究的成本将比现有系统低600MHz的磁铁 只有一家非美国公司以标价 $ 624,000。