Solomon M A, Oloff-Solomon J
Peninsula Imaging Center, Burlingame, California.
Clin Podiatr Med Surg. 1988 Oct;5(4):945-65.
The first image obtained in a live human with MR was performed in July 1977. It took 4 hours and 45 minutes to produce a single slice. Imaging devices became available routinely in late 1982 and early 1983. Since that time, dramatic technologic growth and improvement has brought MR to the forefront of radiology. It is now believed to be the modality of choice for delineating and staging soft-tissue abnormalities and also shows great promise for evaluating marrow replacing processes. Recently, hyaline cartilage has been identified with MR. Previously in radiology, hyaline cartilage could only be identified when it was outlined by contrast material. Cartilage per se is not a radiographic density. MRI therefore offers potential hope as a cartilage-imaging modality. In addition, the synovium is well delineated with MRI, and it is conceivable that in the future we will use MRI to quantitate synovial proliferation and to monitor response to therapy. The future is quite bright. Currently, spatial resolutions below 1 mm are common with slice thicknesses available at 2 to 2.5 mm. In the future, however, sections will become thinner, spatial resolution will become greater, and localized radiofrequency coils will be developed for specific anatomic regions. Practicing podiatrists should now consider MR a useful tool in the imaging armamentarium.
1977年7月，对一名活体人类进行了首次磁共振成像检查。生成一幅图像需要4小时45分钟。成像设备在1982年末和1983年初开始常规使用。从那时起，显著的技术发展和改进使磁共振成像成为放射学的前沿技术。现在，它被认为是描绘软组织异常和进行分期的首选方式，并且在评估骨髓替代过程方面也显示出巨大潜力。最近，透明软骨已能用磁共振成像识别。在此之前的放射学中，透明软骨只有在被造影剂勾勒出轮廓时才能被识别。软骨本身不是放射密度。因此，磁共振成像作为一种软骨成像方式提供了潜在的希望。此外，滑膜能用磁共振成像清晰显示，并且可以想象，未来我们将利用磁共振成像来量化滑膜增生并监测治疗反应。前景十分光明。目前，低于1毫米的空间分辨率很常见，切片厚度可达2至2.5毫米。然而，未来切片将变得更薄，空间分辨率将更高，并且将为特定解剖区域开发局部射频线圈。执业足病医生现在应将磁共振成像视为成像设备中的一种有用工具。
