Magnetic resonance imaging system and cryostat structure thereof

Abstract

The present invention provides a cryostat structure. The cryostat structure comprises a tank and a cold finger component; a cavity is defined in the tank; the cavity is used for accommodating a coolant and a superconducting coil soaked in the coolant; the superconducting coil is used for generating a main magnetic field required by magnetic resonance imaging; the cold finger component is located at the side surface of the tank; the cold finger component is used for cooling the cavity to keep the superconducting coil at a low temperature superconducting state; the cold finger component is disposed obliquely with respect to a vertical direction, namely, an included angle exits between the cold finger component and the vertical direction, so that a space between the cold finger component anda ceiling can be expanded, and therefore, the height of the tilted cold finger component after the cold finger component is pulled out can be reduced, and as a result, the space can accommodate the cold finger component, an installation requirement for a hospital site can be lowered. The invention also provides a magnetic resonance imaging system.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a magnetic resonance imaging system and a cryostat structure thereof. Background technique [0002] Magnetic resonance imaging system is a medical method aimed at obtaining one-dimensional, two-dimensional and three-dimensional images. It is very suitable for imaging soft tissues and is mainly used for diagnosing disease pathology and internal injuries. A typical MRI system includes superconducting coils to generate a strong, uniform main magnetic field across the scan area. Superconducting coils work at extremely low temperatures, and zero liquid helium volatilization is usually used with a refrigerator to maintain the temperature of the superconducting coils. [0003] The low-temperature refrigerator provides sufficient cooling compensation, whose value is greater than the leaked heat from the outside, so that the entire low-temperature system can reach a stable ultr...

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Problems solved by technology

[0005] Based on this, it is necessary to provide a cryostat structure that can be easily installed and disassembled so as to reduce the installation requirements on the hospital site, in view of the problem that the small space between the cold head and the ceiling above it affects the disassembly and assembly of the cold head. At the same time, a magnetic resonance imaging system containing the above-mentioned cryostat structure is also provided

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