Method for manufacturing gradient active shimming coil
A technology for shim coils and manufacturing methods, applied in coil manufacturing, coils, measuring devices, etc., can solve problems such as low production efficiency and low precision, and achieve improved coil precision, high installation precision, and guaranteed stability and uniformity Effect
Inactive Publication Date: 2013-05-08
南京麦菲电子科技有限公司
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Problems solved by technology
[0007] In order to overcome the problems of low precision and low production efficiency in the production of existing gradient shim coils, the present invention provides a brand-new method for producing gradient active shimming coils. The production method described in the present invention is simple to produce and easy to produce High efficiency, gradient active shim coils made of it have high magnetic field uniformity and uniform linearity
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[0021] The present invention will be further described below by specific embodiment:
[0022] The structural schematic diagram of gradient active shim coil of the present invention is as follows figure 1 As shown, its specific manufacturing method includes the following steps: 1) Input the shape data of the active shim coil into the CNC machining machine tool, and then use the CNC machine tool to engrave the slots inlaid with copper strands on the grooved plate;
[0023] 2) Embed copper stranded wires in the groove of the slotted plate;
[0024] 3) spraying thermosetting resin on the surface of the copper stranded wire, the thermal conductivity of the resin is greater than 1W / (m·K);
[0025] 4) Bond the resin-sprayed copper stranded wires to the epoxy board and press the epoxy board to fix the copper stranded wires to form.
[0026] Use CNC machine tools to engrave wire grooves on the grooved board, then place copper strands in the wire grooves and spray thermosetting resin ...
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Abstract
The invention relates to a method for manufacturing a gradient active shimming coil. The method comprises the following steps of: 1) inputting shape data of the active shimming coil into a numerical control machining machine tool, and carving a wire casing into which copper stranded wires are inlaid on a groove carving board by utilizing the numerical control machine tool; 2) embedding the copper stranded wires into the wire casing of the groove carving board; 3) brushing thermosetting resin on the surfaces of the copper stranded wires, wherein the heat conductivity of the resin is more than 1W / (m K); and 4) bonding the copper stranded wires on which resin is brushed on an epoxy board, pressing the epoxy board, so that the copper stranded wires and the epoxy board are fixed to be formed. The method has the advantages that a track wire casing of the active shimming coil is machined by utilizing the numerical control machine tool, so that the machining accuracy is high, and the machined groove carving board can be used repeatedly; and the manufacturing efficiency and accuracy of the coil can be improved greatly, the mass production of the gradient coil is facilitated, and the stability and uniformity of the shimming of a main magnetic field are ensured.
Description
technical field [0001] The invention relates to a magnetic resonance imaging system. Specifically, it relates to a manufacturing method of an active shim coil of a gradient coil 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 resonanc...
Claims
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Login to View More IPC IPC(8): H01F41/04H01F5/00G01R33/385
Inventor 庞宗强刘光树
Owner 南京麦菲电子科技有限公司