Davis W L, Boyer R S
Department of Radiology, University of Utah Medical Center, Salt Lake City 84132.
Top Magn Reson Imaging. 1993 Winter;5(1):50-67.
Magnetic resonance angiography (MRA) is a novel technique that uses gradient echo pulse sequences and computer postprocessing technology to create vascular-flow images. The technique is easy to apply, noninvasive, and frequently yields information not available by other noninvasive means. The utility and benefits of MRA are amply documented by clinical studies in the neuroimaging literature. This article reviews the techniques of MRA and the current literature in the application of MRA in pediatric imaging. Illustrative cases demonstrating the use of MRA in pediatric neuroradiology are presented. The utilization of MRA in congenital lesions such as aberrant internal carotid artery and arteriovenous malformation and in differing causes of ischemic disease is highlighted. There is an ever-expanding number of applications of MRA in pediatric neuroimaging. Despite the lack of standardized protocols, with a thorough knowledge of the basic principles, MRA can be successfully applied in many imaging situations. The ease of use and noninvasive nature of MRA make it an ideal tool in the evaluation of the pediatric neurovasculature.
磁共振血管造影（MRA）是一种利用梯度回波脉冲序列和计算机后处理技术来生成血管血流图像的新技术。该技术易于应用，无创，且常常能提供其他无创方法无法获得的信息。神经影像学文献中的临床研究充分证明了MRA的实用性和益处。本文回顾了MRA技术以及MRA在儿科影像学应用方面的当前文献。展示了MRA在儿科神经放射学中应用的示例病例。重点介绍了MRA在先天性病变如颈内动脉异常和动静脉畸形以及不同病因的缺血性疾病中的应用。MRA在儿科神经影像学中的应用数量不断增加。尽管缺乏标准化方案，但通过深入了解基本原理，MRA可成功应用于许多成像情况。MRA的易用性和无创性使其成为评估儿科神经血管系统的理想工具。
