Intellectualized liquid-helium-free magnetic resonance whole-body imaging superconducting magnet system

Abstract

The invention discloses an intellectualized liquid-helium-free magnetic resonance whole-body imaging superconducting magnet system. The intellectualized liquid-helium-free magnetic resonance whole-body imaging superconducting magnet system comprises a vacuum container, a helium liquid storage box and a refrigerator, wherein a main magnetic field superconducting coil is arranged in a radial insidespace of the vacuum container, a shielding magnetic field superconducting coil is arranged in a radial outside space of the vacuum container, and a heat pipe air storage tank is placed in an idle areabetween the main magnetic field superconducting coil and the shielding magnetic field superconducting coil; the helium liquid storage box is communicated with a liquid storage box and air storage tank, is also connected with the main magnetic field superconducting coil or the shielding magnetic field superconducting coil through a helium self-oscillating heat pipe, and the helium self-oscillatingheat pipe is further communicated with the heat pipe air storage tank; the refrigerator is fixed to the vacuum container through a cold head automatic insertion and extraction assembly; the first-level cold head of the refrigerator is in close contact with a thermal radiation screen assembly, and the second-level cold head of the refrigerator is in close contact with the helium liquid storage box. By means of the intellectualized liquid-helium-free magnetic resonance whole-body imaging superconducting magnet system, the problems are solved that an existing superconducting magnet system is poor in cooling performance, once the refrigerator stops work, a magnet loses heat quickly due to excessive heat leakage, and the superconducting magnet system is complicated to maintain and poor in reliability.

Description

technical field [0001] The invention relates to a superconducting magnet system used in the field of magnetic resonance whole body imaging, in particular to an intelligent liquid helium-free superconducting magnetic resonance system. Background technique [0002] Magnetic resonance imaging (MRI) uses the magnetic resonance phenomenon of atomic nuclei (such as protons) under a uniform magnetic field to image different tissues and organs in the human body, thereby realizing medical diagnosis and other functions. The signal-to-noise ratio of magnetic resonance imaging is proportional to the magnetic field strength, so the higher the field strength, the better the clarity of magnetic resonance imaging, which is more conducive to doctors to make accurate diagnoses and realize complex imaging functions. At present, the mainstream of domestic and foreign markets is 1.5T magnetic resonance imaging system, and the imaging system with 3T or even higher magnetic field has a faster deve...

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the low performance and reliability of the conduction cooling refrigeration system of the existing whole-body imaging magnetic resonance superconducting magnet system. To solve the problem of complex maintenance and poor reliability, a liquid helium-free intelligent whole-body imaging magnetic resonance superconducting magnet system is proposed

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