Compact MRI

紧凑型磁共振成像

• 批准号: EP/R042918/1
• 负责人: Timothy Coombs
• 金额: $ 95.19万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FR042918%2F1
• 关键词: Compact; MRI

The project is primarily carried out at Cambridge University by the research team led by Dr Coombs. The research is constituted to address fundamental underpinning research into the development of ultra-high field magnets that will help to advance research into novel materials and to further understand existing ones. Currently HTS magnets have to be driven by bulky power supplies via thick warm-to-cold current leads, which complicates heat insulation, limits current capacity, and affects field stability. Flux pumping an HTS magnet provides an approach to eliminate the reliance on such power supplies and current leads, opening up the way to a truly compact, transportable and low cost MRI which could be taken to the patients' bedsides. Further weight savings can be achieved by developing an ultra-short magnet.Mobile near-patient MRI for acute brain imaging is a tantalizing prospect but no clinically usable prototype solution is currently available. The technological challenges are substantial. The magnetic field in traditional MRIs is generated by Low-Temperature Superconductors which operate in liquid helium(@4.2K). This project will explored the possibility of creating an ultra-compact system using HTS and thereby to extend the range of an already proven method of clinical diagnosis, MRI, saving lives and improving recovery prospects.

该项目主要由库姆斯博士领导的研究小组在剑桥大学进行。这项研究是为了解决超高场磁体开发的基础研究，这将有助于推进对新材料的研究，并进一步了解现有材料。目前，高温超导磁体必须由庞大的电源通过粗大的温冷电流引线驱动，这会使隔热变得复杂，限制电流容量，并影响磁场稳定性。磁通泵送高温超导磁体提供了一种方法，消除了对此类电源和电流引线的依赖，为实现真正紧凑、可运输和低成本的核磁共振开辟了道路，可以带到患者的床边。开发一种超短磁可以进一步减轻体重。移动式近患者MRI用于急性脑成像是一个诱人的前景，但目前还没有临床可用的原型解决方案。技术上的挑战是巨大的。传统磁共振成像中的磁场是由工作在液氦(@4.2K)中的低温超导体产生的。该项目将探索使用HTS创建超紧凑型系统的可能性，从而扩大已经证明有效的临床诊断、核磁共振、拯救生命和改善康复前景的方法的范围。

项目成果

An HTS power switch using YBCO thin film controlled by AC magnetic field

交流磁场控制的YBCO薄膜高温超导功率开关

• DOI: 10.1088/1361-6668/ab2d61
• 发表时间: 2019
• 期刊: Superconductor Science and Technology
• 影响因子: 3.6
• 作者: Gawith J

Persistent current switch for HTS superconducting magnets: Design, control strategy, and test results

HTS超导磁体的持续电流开关：设计、控制策略和测试结果

• DOI: 10.17863/cam.37041
• 发表时间: 2019
• 作者: Li C

Modeling methodology for a HTS flux pump using a 2D H-formulation

使用 2D H 公式的 HTS 通量泵建模方法

• DOI: 10.17863/cam.33989
• 发表时间: 2018
• 作者: Geng J

A kilo-ampere level HTS flux pump

• DOI: 10.1088/1361-6668/ab1821
• 发表时间: 2019-01
• 期刊: Superconductor Science and Technology
• 影响因子: 3.6
• 作者: J. Geng;T. Painter;Peter Long;J. Gawith;Jiabin Yang;Jun Ma;Q. Dong;B. Shen;C. Li;T. Coombs-T.

Superconducting flux pumps

• DOI: 10.1063/1.5098384
• 发表时间: 2019-06-21
• 期刊: JOURNAL OF APPLIED PHYSICS
• 影响因子: 3.2
• 作者: Coombs, T. A.