在接收端受限的磁共振成像（MRI）系统中使用大阵列提高信噪比

Using Large Arrays for SNR Improvement on Receiver Limited MRI Systems.

作者信息

Spence Dan, Wright Steven, Ji Jim

机构信息

Texas A&M University Dept. of Electrical Engineering, College Station, TX 77843 USA. E-mail:

出版信息

Conf Proc IEEE Eng Med Biol Soc. 2005;2005:4286-9. doi: 10.1109/IEMBS.2005.1615412.

DOI:10.1109/IEMBS.2005.1615412

PMID:17281182

Abstract

Large arrays of RF coils with 16 or more channels are becoming commercially available. However, most MR scanners have eight or fewer receiver channels. In order for these scanners to achieve the SNR benefits of these large arrays, the signals from the array elements must be combined. In this paper, strategies for combining the array elements into 8 or fewer channels are discussed and an analysis of the expected SNR improvement is presented. We expect these results to scale to cases such as 32 channels with 128 array elements.

摘要

具有16个或更多通道的大型射频线圈阵列正逐渐商业化。然而，大多数磁共振成像（MR）扫描仪的接收通道为8个或更少。为了让这些扫描仪获得这些大型阵列的信噪比（SNR）优势，必须对来自阵列元件的信号进行合并。本文讨论了将阵列元件合并为8个或更少通道的策略，并给出了预期信噪比提升的分析。我们预计这些结果可推广到如具有128个阵列元件的32通道等情况。