Chen Q, Stock K W, Prasad P V, Hatabu H
Department of Radiology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA.
Eur J Radiol. 1999 Feb;29(2):90-100. doi: 10.1016/s0720-048x(98)00172-7.
This article reviews fast magnetic resonance (MR) techniques currently used for body imaging. Improvements in gradient performance have made very short repetition and echo times on clinical scanners feasible, thus enabling subsecond image acquisition. The article provides a fundamental overview of the technical aspects from the concept of k-space and k-space segmentation technique, fast MR imaging techniques including fast spin echo, fast gradient echo with or without magnetization preparation to echo planar and hybrid techniques. The article also addresses the use of different fat suppression techniques in MR imaging of the body and improvements in coil technology to obtain faster images and higher signal-to-noise.
本文综述了目前用于体部成像的快速磁共振（MR）技术。梯度性能的改进使得临床扫描仪上非常短的重复时间和回波时间成为可能，从而实现了亚秒级图像采集。本文从k空间概念和k空间分割技术等技术层面进行了基本概述，介绍了快速MR成像技术，包括快速自旋回波、带或不带磁化准备的快速梯度回波、回波平面成像和混合技术。本文还讨论了不同脂肪抑制技术在体部MR成像中的应用，以及线圈技术的改进，以获得更快的图像和更高的信噪比。
