Macovski A
Department of Electrical Engineering, Stanford University 94305, USA.
Magn Reson Med. 1996 Sep;36(3):494-7. doi: 10.1002/mrm.1910360327.
This study analyzes the signal-to-noise ratio (SNR) in magnetic resonance imaging. The factors that determine the SNR are derived starting from basic principles. The SNR, for a given object, is shown to be proportional to the voxel volume and the square root of the acquisition time. The noise generated by the body is derived using a cylindrical model and is shown to be proportional to the square of the radius and the square root of the length.
本研究分析了磁共振成像中的信噪比（SNR）。从基本原理出发推导了决定信噪比的因素。对于给定物体，信噪比与体素体积和采集时间的平方根成正比。利用圆柱模型推导了身体产生的噪声，结果表明该噪声与半径的平方和长度的平方根成正比。
