High Field Superconducting Magnet Technologies for Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) has become one of the most powerful tools in modern medical diagnosis and interventional therapy. It can achieve very fast scanning due to the synchronization in time and space under the high field with high homogeneity. High field with high stability in time can improve the ratio of signal to noise and the imaging resolution. It has become an important diagnostic tool in the early stages of cancer, and the evaluation of the efficacy of treatment and high-risk surgery, neuroscience, and molecular imaging. On the other hand, in recent years, the development of openness in high field magnets can combine the MRI with positron emission tomography and/or accelerator, which contributes to form more excellent medical diagnosis tools. The high-field superconducting has been widely used in medical imaging. The superconducting magnet technology depends on the development of material and cryogenic technology. In this paper, the superconducting MRI systems applied in the medical diagnosis and interventional therapy in China were reviewed.