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Superconducting Magnet For Magnetic Resonance Imaging Or Spectroscopy

一种超导磁体、超导体的技术，应用在超导磁体/线圈、磁性物体、测量磁变量等方向，能够解决铌-钛低超导转变温度等问题，达到尺寸最小化的效果

Active Publication Date: 2016-11-09
OXFORD INSTR NANOTECH TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The reason for this problem is that niobium-titanium has a low superconducting transition temperature

Method used

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  • Superconducting Magnet For Magnetic Resonance Imaging Or Spectroscopy
  • Superconducting Magnet For Magnetic Resonance Imaging Or Spectroscopy
  • Superconducting Magnet For Magnetic Resonance Imaging Or Spectroscopy

Examples

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Embodiment Construction

[0042] Since the examples of superconducting magnets described herein allow superconducting magnets to be lighter and more compact than known superconducting magnets at comparable field strengths, the superconducting magnets described herein Examples represent progress relative to known superconducting magnets. Examples of superconducting magnets described herein are also capable of generating higher field strengths than known superconducting magnets of comparable size. This can be achieved by using at least two different types of superconducting electromagnets to form hybrid magnets.

[0043] As mentioned earlier, conventional superconducting magnets for MRI and MRS are based on the "compensated solenoid configuration" shown in Figure 1, while conventional superconducting magnets use niobium-titanium coils and operate at Operate under field strength. Figure 1 shows a superconducting magnet 1000 having a niobium-titanium solenoid 1001 wound around a former 1002 having a hole...

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Abstract

A superconducting magnet is provided for magnetic resonance imaging (MRI) or spectroscopy (MRS). The magnet has a plurality of discrete Niobium-Titanium superconductor coils (10) arranged longitudinally along a common central axis, the Niobium-Titanium superconductor coils generating a first magnetic field when in use, the first magnetic field having high field regions of at least 5 Tesla radially inward of the discrete coils. At least two Niobium-Tin superconductor coils (16) are located along the common central axis, each of which is located in a said high field region of the first magnetic field, the Niobium-Tin superconductor coils each generating a respective second magnetic field when in use, which combines with the first magnetic field to produce a resultant magnetic field which is of higher field strength than that of the first magnetic field at a location on the common central axis. The magnet is arranged to have a radial separation between each Niobium-Tin coil and the closest Niobium-Titanium coil to the respective Niobium-Tin coil, and there is an axial bore through the coils having a diameter of at least 150mm.

Description

technical field [0001] The present invention relates to a superconducting magnet. In particular, the present invention relates to a superconducting electromagnet for use in MRI or MRS. Background technique [0002] Superconducting magnets are mainly used in medical imaging. For example, superconducting electromagnets are currently the most common type of magnet used in MRI (magnetic resonance imaging) and MRS (magnetic resonance spectroscopy) equipment, while superconducting electromagnets are also commonly used in NMR (nuclear magnetic resonance) imaging. In these applications, superconducting electromagnets are usually arranged in one or more coils (i.e., the superconducting wire is wound into a cylinder and each coil has a specific number of turns), and the one or more coils have a common center longitudinal axis. The coil or coils of any particular magnet setup are typically configured to produce a highly uniform magnetic field in the center of the coil (this area is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/00H01F6/06G01R33/3815
CPCG01R33/3815H01F6/00H01F6/06H01F6/065
Inventor 蒂莫西·霍利斯马文彬
Owner OXFORD INSTR NANOTECH TOOLS