磁共振成像的信噪比:计量方法与影响因素  

MRI Signal Noise Ratio: Measuring Methods and Influencing Factors

作　　者：彭光明[1] 黄新华[1] 周文化[1] 李乐红[1] 

机构地区：[1]广州军区广州总医院磁共振室,广州510010

出　　处：《影像技术》1997年第4期22-24,共3页Image Technology

摘　　要：在临床上研究不同的MRI扫描技术时，必须要用信噪比这个参数来对图像的成像质量进行评价。最大限度地提高信噪比能有效地改善图像质量。本文描述了信噪比的常用计量方法及在临床磁共振成像扫描中选择不同的参数对信噪比的影响。During the clinical study of different scanning MRI techniques, it is necessary to evaluate the image quality by measuring the signal noise ratio. The utmost high value of signal noise ratio can significantly improve the image quality. This paper presents an outline of general methods for measuring the signal noise ratio and a discussion on the influence of the choise of different parameters in clinical MRI scanning on the signal noise ratio.

关 键 词：磁共振成像 MRI 信噪比 质量保证 

分 类 号：R445.2[医药卫生—影像医学与核医学]