Department of Radiology, Scott & White Clinic and Hospital, Texas A&M University Health Science Center, Temple, Texas, USA.
J Magn Reson Imaging. 2013 Jun;37(6):1326-41. doi: 10.1002/jmri.24174.
As the complexity of the magnetic resonance angiography (MRA) techniques grows, it becomes more difficult for the practicing radiologist to appreciate the physical principles underlying these studies. Nevertheless, such an understanding is requisite for improving clinical image quality. As radiologists are most accustomed to dealing with medical images in everyday practice, it seems natural that an image-based approach to teaching MRA physics, rather than complex mathematical equations or pulse sequence diagrams, would be preferable. This article adopts such an approach. Simple ways to improve MRA image quality are emphasized along with new technologies and their physical basis. The ultimate goal of the article is to facilitate the practicing radiologist becoming more aware of the variety of MR techniques available, being more confident in modifying sequence parameters to improve image quality and reduce contrast dose, and understanding the basis behind newer MRA techniques.
随着磁共振血管造影（MRA）技术的复杂性不断增加，对于从事放射科的医生来说，理解这些研究背后的物理原理变得越来越困难。然而，为了提高临床图像质量，这种理解是必要的。由于放射科医生在日常实践中最习惯于处理医学图像，因此基于图像的 MRA 物理教学方法（而不是复杂的数学方程或脉冲序列图）似乎是首选方法。本文采用了这种方法。强调了提高 MRA 图像质量的简单方法，以及新技术及其物理基础。本文的最终目标是帮助从事放射科的医生更加了解现有的各种磁共振技术，更加有信心地修改序列参数以提高图像质量和降低对比剂量，并理解较新技术背后的基础。
