Magnetic field measurement device of magnetic resonance imaging superconducting magnet central area

A magnetic resonance imaging and superconducting magnet technology, applied in the direction of the size/direction of the magnetic field, can solve the problems of limited adjustment ability, difficult to ensure position accuracy, time-consuming and labor-intensive problems

Inactive Publication Date: 2013-03-27
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI +1
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Problems solved by technology

The selection of the location of the central shimming area will determine the quality of the final shimming effect, and the existing magnetic resonance imaging superconducting magnet central area magnetic field measurement device (central area magnetic field measurement device) can adjust the range of the search for the magnetic field center position Limited (the adjustment ability is limited when looking for the central area), and time-consuming and laborious, it is difficult to ensure the accuracy of position adjustment

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  • Magnetic field measurement device of magnetic resonance imaging superconducting magnet central area
  • Magnetic field measurement device of magnetic resonance imaging superconducting magnet central area
  • Magnetic field measurement device of magnetic resonance imaging superconducting magnet central area

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Embodiment Construction

[0038] The core of the present invention is to provide a magnetic resonance imaging superconducting magnet center area magnetic field measurement device. In the present invention, the magnetic resonance imaging superconducting magnet central area magnetic field measurement device can make the magnetic probe probe in any space through its structural design. Magnetic field measurement in azimuth.

[0039] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Please refer to figure 1 with figure 2 ,in, figure 1 It is a schematic diagram of the installed structure of the magnetic resonance imaging superconducting magnet central area magnetic field measuring device in an embodiment of the present invention; figure 2 It is a structural schematic diagram of a magnetic resonanc...

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Abstract

The invention discloses a magnetic field measurement device of a magnetic resonance imaging superconducting magnet central area. The magnetic field measurement device comprises a magnetic measurement probe and an adjustment supporting frame. The adjustment supporting frame comprises an axial adjustment rod coaxially arranged with an inner barrel of a superconducting magnet, a radial supporting part used for the axial adjustment rod to be installed on and a height adjustment part arranged on the axial adjustment rod. The magnetic measurement probe can perform magnetic field measurement in any spatial direction through combined effect of the axial adjustment rod and the height adjustment part, and accordingly the adjustment capability of an adjustment device is expanded.

Description

technical field [0001] The present invention relates to the technical field of magnetic resonance imaging, and more specifically relates to a magnetic resonance imaging device for measuring the magnetic field in the central region of a superconducting magnet. Background technique [0002] Magnetic resonance imaging (MRI) has become one of the main means of modern medical imaging. Its imaging quality and working efficiency largely depend on the uniformity of the basic magnetic field in the central imaging area of ​​the magnet. [0003] The superconducting magnetic resonance imaging magnet for general medical whole-body imaging needs to have a uniform static magnetic field in a sphere with a diameter of 50 cm at the center of the magnetic field, and the root mean square value of the magnetic field deviation should reach about 10 ppm. However, due to the deviation brought about by the actual manufacturing process of the magnet, for a well-designed and carefully assembled MRI s...

Claims

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Application Information

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IPC IPC(8): G01R33/02
Inventor 张国庆朱自安赵玲耿丽斯王兆连李培勇胡金刚
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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