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B0 magnetic field compensation device and compensation method of magnetic resonance imaging equipment

A technology of magnetic resonance imaging and compensation device, which is applied in the direction of measurement device, measurement of magnetic variables, instruments, etc., can solve the problems of image quality degradation, affecting the stability of the main magnetic field, and being easily disturbed by external magnetic fields, and achieves a stable and stable solution. Effect

Pending Publication Date: 2022-07-22
SHENZHEN ACAD OF AEROSPACE TECH +5
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Problems solved by technology

However, due to the relatively low field strength of low-field magnetic resonance, especially open magnetic resonance, compared with high-field magnetic resonance, it is more likely to be disturbed by external magnetic fields, causing serious degradation of image quality, such as 50 Hz disturbance of power supply, Low-frequency magnetic field disturbance, external mechanical vibration disturbance, other electromagnetic interference, etc. will affect the stability of the main magnetic field

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  • B0 magnetic field compensation device and compensation method of magnetic resonance imaging equipment
  • B0 magnetic field compensation device and compensation method of magnetic resonance imaging equipment
  • B0 magnetic field compensation device and compensation method of magnetic resonance imaging equipment

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Embodiment Construction

[0036]The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic idea of ​​the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0037] Among them, the accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical drawings, and should not be c...

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Abstract

The invention relates to a B0 magnetic field compensation device and compensation method for magnetic resonance imaging equipment, and belongs to the technical field of magnetic resonance. The device comprises a B0 magnetic field detection sensor, a B0 magnetic field compensation coil and a B0 magnetic field compensation circuit, the B0 magnetic field compensation coil can generate a compensation magnetic field in an imaging area after being electrified through the compensation circuit, and the generated compensation magnetic field adopts a PID (Proportion Integration Differentiation) adjustment mode. The whole circuit structure is a feedback network, closed-loop automatic control is adopted, fluctuation of the low-frequency magnetic field is monitored in real time, dynamic adjustment is achieved, and the low-frequency magnetic field of the magnetic resonance imaging device can be controlled in real time. The disturbance of fluctuation interference of an external magnetic field on a static magnetic field in a magnetic resonance imaging area is minimized, and the stability of a B0 magnetic field is improved.

Description

technical field [0001] The invention belongs to the technical field of magnetic resonance, and relates to a B of a magnetic resonance imaging device. 0 Magnetic field compensation device and compensation method. Background technique [0002] Magnetic resonance imaging, as one of the important medical imaging technologies, is widely used in scientific research, clinical medicine and many other fields due to its high spatial resolution and good spatial positioning and other incomparable advantages of other imaging technologies. At present, many local hospitals in China are equipped with magnetic resonance equipment, especially low-field magnetic resonance. Low-field magnetic resonance (LFMR) is rapidly gaining popularity due to its low operating costs, increasing imaging quality, and the development of advanced sequences. However, due to the relatively low field strength of low-field magnetic resonance, especially open magnetic resonance, compared with high-field magnetic re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/3875
CPCG01R33/3875
Inventor 徐征吴嘉敏温开旭贺玉成何为廖英翔
Owner SHENZHEN ACAD OF AEROSPACE TECH
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