核磁共振成像中的梯度放大器缺陷。

Gradient amplifier imperfections in NMR imaging.

作者信息

Weis J, Budinský L, Krízik M

机构信息

Institute of Measurement Science, Slovak Academy of Sciences, Bratislava, Czechoslovakia.

出版信息

Magn Reson Imaging. 1992;10(3):461-4. doi: 10.1016/0730-725x(92)90518-5.

DOI:10.1016/0730-725x(92)90518-5

PMID:1406096

Abstract

This paper describes the influence of the transition distortion of gradient amplifiers on direct Fourier NMR imaging techniques. We demonstrate artifacts arising in the real measurement of the spin density images. Image artifacts are compared with artifacts obtained by computer simulations of the transition distortion of gradient amplifiers.

摘要

本文描述了梯度放大器的过渡失真对直接傅里叶核磁共振成像技术的影响。我们展示了在自旋密度图像的实际测量中出现的伪影。将图像伪影与通过梯度放大器过渡失真的计算机模拟获得的伪影进行了比较。