Basic principles of diffusion-weighted imaging
Basic principles of diffusion-weighted imaging
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DOI：
10.1016/s0720-048x(02)00303-0
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发表时间：
2003-03-01
影响因子：
3.3
通讯作者：
Bammer, R
中科院分区：
文献类型：
--
作者：
Bammer, R
在弥散加权MRI（DWI）中，图像对比度由水质子的随机微观运动决定。在过去的几年中，DWI已成为诊断中枢神经系统急性缺血的重要方式。也有一些关于DWI应用于人体其他部位（如脊柱或腹部）的有前景的报告。这份手稿介绍了DWI和扩散张量成像的基础知识。讨论了各种MR序列与扩散准备的潜力，包括采集速度、空间分辨率和对大体积生理运动的灵敏度。更先进的扩散测量技术，如高角分辨率扩散成像，也解决了。(C)2002爱思唯尔科学爱尔兰有限公司保留所有权利。
In diffusion-weighted MRI (DWI), image contrast is determined by the random microscopic motion of water protons. During the last years, DWI has become an important modality in the diagnostic work-up of acute ischemia in the CNS. There are also a few promising reports about the application of DWI to other regions in the human body, such as the vertebral column or the abdomen. This manuscript provides an introduction into the basics of DWI and Diffusion Tensor imaging. The potential of various MR sequences in concert with diffusion preparation are discussed with respect to acquisition speed, spatial resolution, and sensitivity to bulk physiologic motion. More advanced diffusion measurement techniques, such as high angular resolution diffusion imaging, are also addressed. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved.