Method for fabricating gradient coil of superconducting magnetic resonance imaging device

A superconducting magnetic resonance and imaging device technology, which is applied in the direction of measuring devices, measuring magnetic variables, instruments, etc., can solve the problem of harsh cooling requirements of gradient coils, achieve accurate winding accuracy, large current-carrying cross-sectional area, and reduce harsh requirements Effect

Inactive Publication Date: 2012-10-17
南京麦菲电子科技有限公司
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Problems solved by technology

[0005] In order to overcome the limitations of the existing gradient coil manufacturing method for superconducting magnetic resonance imaging devices on the further improvement of the gradient field strength and the strict requirements for the cooling of the gradient coils in the later stage, the present invention provides a brand new superconducting magnetic resonance imaging Method for making gradient coil for device

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  • Method for fabricating gradient coil of superconducting magnetic resonance imaging device
  • Method for fabricating gradient coil of superconducting magnetic resonance imaging device

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Embodiment Construction

[0018] The present invention will be further described below through specific embodiments and schematic diagrams of production methods.

[0019] The structure schematic diagram that the gradient coil that superconducting magnetic resonance imaging device of the present invention is used makes is as figure 1 As shown, its specific production method includes the following steps:

[0020] (1) Use a cutting machine to cut out fingerprint-shaped coils on the copper plate;

[0021] (2) Take off the coil in the red copper plate and clean and air dry;

[0022] (3) Spray thermosetting resin on the surface of the coil, and the thermal conductivity of the resin is greater than 1W / (m K); the use of thermosetting resin can immediately solidify the resin sprayed on the coil, which is convenient for the fixed bonding of the coil and the epoxy board;

[0023] (4) Bond the coil sprayed with resin on the epoxy board and press the epoxy board to fix the coil to it.

[0024] Use a cutting mach...

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Abstract

The invention relates to a method for fabricating a gradient coil of a superconducting magnetic resonance imaging device, which comprises the following steps of: (1) cutting a fingerprint-shaped coil from a copper plate by a cutter; (2) taking the coil from the copper plate, washing and air-drying the coil; (3) spraying a resin on the coil surface; and (4) cementing the coil sprayed with the resin to an epoxy plate and pressing the epoxy plate so that the coil is fixedly shaped with the epoxy plate, wherein the coefficient of heat conductivity of the resin is 1W/(m.K). The invention has the beneficial effects that compared with that the traditional coil is manually wound by a copper stranded wire and a flat type copper wire, the fingerprint coil is processed by a water knife cutting machine, the winding precision is more accurate with less error, and thus the field uniformity difference of the fingerprint coil can be correspondingly reduced; meanwhile, under the restriction of the same radial space size, the copper plate cutting method can realize the maximum carrier cross section, thereby increasing the gradient field density, and reducing the strict requirement on the gradient coil cooling in the late period greatly.

Description

technical field [0001] The invention relates to a magnetic resonance imaging system, in particular to a method for manufacturing a gradient coil used in a superconducting magnetic resonance imaging system. Background technique [0002] Magnetic resonance imaging is an emerging discipline in the field of applied science and a new imaging method in the field of medical imaging. It uses specific radio frequency pulses to excite the magnetic nuclei (hydrogen nuclei) of the imaging object in the main magnetic field to generate resonance. The signal is spatially encoded through the gradient magnetic field. After the resonance signal is collected, the image is reconstructed by a computer. The polarization of the radio frequency field, the excitation of the sample by the radio frequency field and the precise positioning of the imaging position by the gradient field, the signal measured during the magnetic resonance imaging process comes from the resonance between the frequency pulse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/385
Inventor 庞宗强刘光树
Owner 南京麦菲电子科技有限公司
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