Halbach magnet for noninvasive nuclear magnetic resonance detection of human finger blood glucose

A nuclear magnetic resonance, finger technology, used in medical diagnosis and screening, electromagnetic fields, to achieve the effect of improving constant temperature, highly stable performance, and high central magnetic field strength

Active Publication Date: 2020-12-11
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, among the permanent magnet structures used, there is no high-performance NMR magnet structure suitable for finger samples

Method used

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  • Halbach magnet for noninvasive nuclear magnetic resonance detection of human finger blood glucose
  • Halbach magnet for noninvasive nuclear magnetic resonance detection of human finger blood glucose
  • Halbach magnet for noninvasive nuclear magnetic resonance detection of human finger blood glucose

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Embodiment Construction

[0058] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0059] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "left side", "right side", "upper", "lower" are based on the orientations or positional relationships shown in the accompanying drawings, and are only For the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, "first", "second" and the like do not represent components importance, and therefore should not be construed as limiting the invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present in...

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Abstract

The invention discloses a Halbach magnet for human finger blood glucose non-invasive nuclear magnetic resonance detection. The Halbach magnet comprises a main magnet, three layers of shimming rings, ashimming sheet, a double-layer heat insulation device and a temperature control assembly. The main magnet is formed by placing trapezoidal magnetic steel and rectangular magnetic steel at intervals and is hexadecagonal. And the three layers of shimming rings are symmetrically distributed on the inner side close to the main magnet along the central horizontal plane, three layers are arranged eachof the upper part and the lower part, an axial shimming gap is formed in the middle, and optimal structural parameters of the shimming rings are obtained by applying mode search algorithm optimizationand finite element simulation analysis. The uniform magnetic sheet is glued on the uniform magnetic sheet moving positioning structure, the spatial position of the uniform magnetic sheet can be accurately adjusted, the optimized position of the uniform magnetic sheet is obtained through polynomial fitting, simulation parameter optimization, algorithm optimization and other steps, and high uniformity and stability of a magnetic field are guaranteed. The magnet is highly designed to adapt to a finger sample, generates high magnetic field intensity (1T), is excellent in uniformity, and meets theimplementation conditions of analysis methods such as relaxation analysis and magnetic resonance imaging of finger detection.

Description

technical field [0001] The invention relates to the fields of electromagnetism, medical diagnosis and screening, in particular to a Halbach magnet used for non-invasive nuclear magnetic resonance detection of human finger blood sugar. Background technique [0002] With the change of living habits, the incidence of diabetes is increasing year by year. According to the latest statistics from the International Diabetes Federation, as of 2013, there were 238.2 million diabetics worldwide, and it is expected that the number of diabetics worldwide will increase to 592 million by 2035. In China, the incidence of diabetes has reached 9.7%. Therefore, the prevention and treatment of diabetes has important social value. Blood sugar concentration is the main basis for judging diabetes. At present, the commonly used method of human blood glucose detection in clinical practice is blood biochemical analysis after needle drawing or finger pricking. The biochemical analyzer has high pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/38A61B5/055A61B5/145
CPCG01R33/3802A61B5/055A61B5/14532
Inventor 易红陆荣生王俊楠吴正秀张金翔
Owner SOUTHEAST UNIV
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