Institute of Applied Physics, University of Tsukuba.
Graduate School of Human Sciences, University of Tsukuba.
Magn Reson Med Sci. 2023 Jul 1;22(3):379-387. doi: 10.2463/mrms.tn.2021-0158. Epub 2022 Apr 26.
Portable MRI scanners, in which a permanent magnet with a low magnetic field is mounted on a small car, have enabled the performance of MRI examinations in various remote environments. Here, we have modified the portable MRI system to enable the early diagnosis of wrist sports injuries among tennis players. A RF probe specifically designed for the human wrist was developed, and a power supply scheme using a small generator was introduced. The portable MRI system was located at a tennis school and imaging of the wrists of junior tennis players was performed. To demonstrate clinical feasibility, image quality was assessed by a radiologist and clinical evaluations were performed. In most cases, the image quality was sufficient for diagnosis, and triangular fibrocartilage complex damage could be detected. The results indicated that the modified portable MRI system could be applied for an early diagnosis of wrist injuries.
便携式磁共振成像（MRI）扫描仪，将低磁场的永磁体安装在小车上，使在各种远程环境中进行 MRI 检查成为可能。在这里，我们对便携式 MRI 系统进行了改进，以实现对网球运动员腕部运动损伤的早期诊断。专门为人类手腕设计的射频探头，并引入了使用小型发电机的供电方案。便携式 MRI 系统被放置在一个网球学校，对青少年网球运动员的手腕进行成像。为了展示临床可行性，由放射科医生评估图像质量，并进行临床评估。在大多数情况下，图像质量足以进行诊断，并且可以检测到三角纤维软骨复合体损伤。结果表明，改进后的便携式 MRI 系统可用于腕部损伤的早期诊断。
