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Gradient coil for a magnetic resonance tomography and its manufacturing method

A gradient coil and X-ray technology, used in magnetic resonance measurement, coils, applications, etc., can solve the problems of short circuit of welding slag, expensive single piece, fracture of brazing parts, etc.

Inactive Publication Date: 2004-09-01
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This has various disadvantages: such brazed joints are usually designed as milled parts and are thus expensive single pieces
In addition, brazed parts are always a potential failure hazard, because the brazed part may break or may increase the resistance during the abnormal soldering process
In addition, slag generated during brazing may cause short circuits in later work runs

Method used

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  • Gradient coil for a magnetic resonance tomography and its manufacturing method
  • Gradient coil for a magnetic resonance tomography and its manufacturing method
  • Gradient coil for a magnetic resonance tomography and its manufacturing method

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Embodiment Construction

[0038] Figure 1aA schematic perspective view showing a first embodiment of a completely coiled planar gradient coil or saddle deflection coil according to the invention before rolling. The coil is represented by a circular helix 2 with a center 1 (also called eye) in the center. "Completely coiled" designates a conductor arrangement in which an outward radial connection section X is provided from the inside (eye 1) of the helix 2 without a solder connection. Of course, the outward radial connection section X (inner wire lead) may not be in the same plane as the helix 2 . For planar gradient coils, the outward radial connecting section X is positioned in a plane above or below the coil plane, while for saddle deflection coils it is rolled on a cylindrical outer surface When on, the radial connection section X can be positioned at a larger or smaller radius than the cylinder radius. Said inner wire lead is obtained in this way, that is, when the wire is helically coiled from ...

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Abstract

Provided is a gradient magnetic field coil for a magnetic resonance tomography apparatus and its production method.A spiral coil (2) arranged in a first face and an inward conductor lead (X or Y) and an outward conductor lead (6) of the coil (2) are provided, and the inward conductor lead (X or Y) is arranged in a second face which is situated away from the primary aspect. In the gradient magnetic field coil for the magnetic resonance tomography device in which the coil consists of contiguous integrated conductors together with the conductor lead, the inward conductor lead (X) is arranged on the outside of a support plate (T).

Description

technical field [0001] The invention relates to a method for producing gradient coils, for example for use in magnetic resonance tomography (MRT). In addition, the invention also relates to a method for manufacturing a disk coil and a saddle deflection coil. Background technique [0002] Magnetic resonance tomography is based on the physical phenomenon of nuclear spin resonance and has been successfully used as an imaging method in the fields of medicine and biophysics about 15 years ago. In these detection methods the object to be tested is subjected to a strong constant magnetic field. As a result, the spins of atomic nuclei whose orientations are originally disordered in the subject are oriented. At this time, high-frequency waves can make these "ordered" nuclear spins produce definite vibrations (resonant frequencies). These vibrations generate a characteristic detection signal (high-frequency response signal) in the magnetic resonance tomograph, which is received by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F5/02A61B5/055G01R33/385H01F5/00H01F5/04
CPCG01R33/385E06B3/9688E06B3/9648
Inventor 阿克塞尔·V·恩特
Owner SIEMENS AG
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