Parallel MR imaging: A user's guide
Parallel MR imaging: A user's guide
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DOI：
10.1148/rg.255045202
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发表时间：
2005-09-01
期刊：
影响因子：
5.5
通讯作者：
King, K
中科院分区：
文献类型：
--
作者：
Glockner, JF;Hu, HH;King, K
并行成像是最近开发的技术家族，其利用相控阵射频线圈中固有的空间信息来减少磁共振成像中的采集时间。在并行成像中，采样的k空间线的数量减少，通常减少两倍或更多倍，从而显著缩短采集时间。并行成像技术最近才商业化，广泛的临床应用才刚刚开始探索。潜在的临床应用主要涉及减少采集时间、提高空间分辨率或两者的组合。可以通过减少快速自旋回波和单次激发快速自旋回波序列的回波链长度来实现图像质量的改善。并行成像对于心脏和血管应用特别有吸引力，并且随着3-T身体和心血管成像成为标准临床实践的一部分，可能会证明其价值。并行成像的局限性包括信噪比降低和重建伪影。在决定何时使用这些技术时，考虑这些限制非常重要。(c)RSNA，2005年。
Parallel imaging is a recently developed family of techniques that take advantage of the spatial information inherent in phased-array radiofrequency coils to reduce acquisition times in magnetic resonance imaging. In parallel imaging, the number of sampled k-space lines is reduced, often by a factor of two or greater, thereby significantly shortening the acquisition time. Parallel imaging techniques have only recently become commercially available, and the wide range of clinical applications is just beginning to be explored. The potential clinical applications primarily involve reduction in acquisition time, improved spatial resolution, or a combination of the two. Improvements in image quality can be achieved by reducing the echo train lengths of fast spin-echo and single-shot fast spin-echo sequences. Parallel imaging is particularly attractive for cardiac and vascular applications and will likely prove valuable as 3-T body and cardiovascular imaging becomes part of standard clinical practice. Limitations of parallel imaging include reduced signal-to-noise ratio and reconstruction artifacts. It is important to consider these limitations when deciding when to use these techniques. (c) RSNA, 2005.