Composite type 2T whole-body magnetic resonance imaging device

Abstract

The invention relates to a whole-body magnetic resonance imaging device, in particular to a composite type 2T whole-body magnetic resonance imaging device which comprises a magnetic resonance imaging instrument, a filter board, a control device, a software system and a display system. A high-temperature superconducting coil, a refrigerating system and a patient supporting system are designed to be of an integrated structure, the coil is close to an imaging region, the high-temperature superconducting coil is movably connected with the patient supporting system, the periphery of the magnetic resonance imaging instrument is covered with at least two layers of sealing high-vacuum covers, the sealing high-vacuum covers are located at one end of the patient supporting system, the high-temperature superconducting coil is connected with the refrigerating system, and at least part of the refrigerating system is in linkage with the patient supporting system. A superconductor is adopted as a radio frequency coil, coil noise can be lowered, the high-temperature superconductor has low electrical resistivity at the liquid nitrogen temperature of 60 K to 80 K, the quality of a magnetic resonance image is obviously improved, the signal-to-noise ration is improved by one time to three times, and the image quality can be improved to the level of a 3T machine through the 2T superconducting magnet composite high-temperature superconducting coil.

Description

technical field [0001] The invention relates to a novel magnetic resonance imaging device, in particular to a magnetic resonance imaging device which utilizes a high-temperature superconducting radio frequency coil to improve image quality. Background technique [0002] At present, magnetic resonance imaging is an important means of diagnosing human diseases. It can provide clear images of human tissue through scanning. Compared with other diagnostic methods, its magnetic resonance imaging system not only has no ionizing radiation but also has high definition, which can provide doctors with More accurate disease information. In addition, among the many non-invasive medical images today, magnetic resonance imaging is widely used in medical diagnosis because it is non-radiative, has high spatial resolution, can provide better image data, and has high tissue recognition. There is a very high dependence, and hospitals all over the world have been or will soon be equipped with m...

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Problems solved by technology

Of course, it cannot be increased indefinitely, because the biological effect of ultra-high magnetic field strength on the human body is still uncertain. The current maximum clinical field strength is 3T, which is expensive; and the images of abdominal organs produced by 3T equipment lack contrast, and there are many Chemical shift artifacts of

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