论文标题
超导磁铁设计和MRI可访问性：评论
Superconducting magnet designs and MRI accessibility: a review
论文作者
论文摘要
目前，磁共振成像（MRI）磁体必须提供出色的磁场（B0）均匀性才能达到最佳图像质量。长磁铁可以满足同质性要求，但需要大量的超导材料。这些设计导致大型，沉重，昂贵且不稳定的系统随着野外强度的增加而加剧。这个问题是全球MR密度和野外强度使用差异的关键因素。低收入设置显示出对MRI的访问降低，尤其是对高场优势。本文总结了对MRI超导磁铁设计的拟议修改及其对可访问性的影响，包括紧凑，减少液氦和专业系统。减少超导体的量不可避免地需要缩小磁铁的大小，从而导致较高的场不均匀性。这项工作还回顾了克服此问题的最新成像和重建方法。最后，我们总结了可访问MRI设计的当前和未来挑战和机遇。
Presently, Magnetic Resonance Imaging (MRI) magnets must deliver excellent magnetic field (B0) uniformity to achieve optimum image quality. Long magnets can satisfy the homogeneity requirements but require considerable superconducting material. These designs result in large, heavy, costly, and unstable systems that aggravate as field strength increases. This issue is a crucial factor in the disparity of MR density and field strength use across the globe. Low-income settings show reduced access to MRI, especially to high field strengths. This article summarizes the proposed modifications to MRI superconducting magnet design and their impact on accessibility, including compact, reduced liquid Helium and specialty systems. Reducing the amount of superconductor inevitably entails shrinking the magnet size, resulting in higher field inhomogeneity. This work also reviews the state-of-the-art imaging and reconstruction methods to overcome this issue. Finally, we summarize the current and future challenges and opportunities in the design of accessible MRI.
