Critical Technology Development for 16 Tesla Head-only MRI Superconducting Persistent Magnets: V2

16 个特斯拉头部 MRI 超导永久磁铁的关键技术开发：V2

基本信息

批准号：
10006952
负责人：
Minfeng Xu
金额：
$ 117.68万
依托单位：
GENERAL ELECTRIC GLOBAL RESEARCH CTR
依托单位国家：
美国
项目类别：
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-22 至 2023-11-30
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/10006952
关键词：
Binding Proteins Biological Brain Brain imaging Caliber Ceramics Chemicals Electromagnetics Energy Metabolism Ensure Fiber Frequencies Functional Magnetic Resonance Imaging Goals Head Helium High temperature of physical object Human Hybrids Image Image Enhancement Joints Lead Length Liquid substance Location Magnetic Resonance Imaging Mechanical Stress Neocortex Nerve Degeneration Noise Performance Property Reaction Research Resistance Resolution Risk Scheme Sensitivity and Specificity Signal Transduction Stress Stretching System Technology Temperature Testing Thermal Conductivity United States National Institutes of Health Vendor Weight base brain research cost cost effective cryogenics design experimental study high risk human imaging innovation magnetic field manufacturability neuroimaging neurotransmission novel pressure repaired technology development thermal stress wound

项目摘要

PROJECT SUMMARY Advanced brain research demands ultra-high field MRI systems. The 11.7 T Neurospin CEA MRI magnet pushed the use of superconducting NbTi materials to the limit by using superfluid helium to cool. To design and build a cost effective 16 T head-only MRI magnet, Nb3Sn wires must be used. To reduce the risks with such a high-field, high-stress, and high-stored energy magnet, critical technologies must be developed before a 16 T MRI system can be realized. One of the biggest risks is the cracking of the Nb3Sn coil composite matrix under high mechanical and thermal stress. GE Research will design and test Nb3Sn test coils under high background magnetic fields (~8.5 T) to evaluate the integrity of novel ceramic-fiber insulation composite matrix under high mechanical and thermal stress. Persistent joints on unreacted Nb3Sn wires, reacted wires, and NbTi to Nb3Sn wires will be developed and tested under external magnetic fields. Joint resistance is targeted to be <10-10 - 10-9  for the magnet to operate in a persistent mode.

项目概要先进的大脑研究需要超高场 MRI 系统 11.7 T Neurospin CEA MRI 磁体。通过使用超流氦来冷却，将超导铌钛材料的使用推向极限。构建具有成本效益的 16 T 头部 MRI 磁体，必须使用 Nb3Sn 线以降低风险。高磁场、高应力、高储能的磁体，16T之前必须开发关键技术 MRI系统能够实现的最大风险之一是Nb3Sn线圈复合基体在作用下的破裂。高机械应力和热应力 GE 研究部将在高背景下设计和测试 Nb3Sn 测试线圈。磁场（~8.5 T）评估新型陶瓷纤维绝缘复合材料基体在高温下的完整性未反应的 Nb3Sn 焊丝、反应的焊丝以及 NbTi 至 Nb3Sn 上的持久接头。电线将在外部磁场下进行开发和测试，目标是<10-10 - 10-9。  使磁铁以持续模式运行。