SENSE: Sensitivity encoding for fast MRI
SENSE: Sensitivity encoding for fast MRI
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DOI：
10.1002/(sici)1522-2594(199911)42:5
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发表时间：
1999-11-01
影响因子：
3.3
通讯作者：
Boesiger, P
中科院分区：
文献类型：
--
作者：
Pruessmann, KP;Weiger, M;Boesiger, P
提出了新的理论和实践概念，以大幅度提高多接收线圈阵列的磁共振成像（MRI）的性能。灵敏度编码（SENSE）是基于这样一个事实，即接收器灵敏度通常具有与线性场梯度傅里叶制备互补的编码效果。因此，通过在傅里叶成像中使用多个接收线圈并行扫描时间可以大大减少。从灵敏度编码数据中重建图像的问题以一种通用的方式表述，并解决了任意线圈配置和k空间采样模式。特别注意到目前最实际的情况，即采样一个共同的笛卡尔网格与降低密度。在体外和体内验证了所提出方法的可行性。在脑成像中使用双线圈阵列扫描时间减少到一半。利用五线圈阵列，在常规扫描时间的三分之一内获得双斜位心脏图像。中华医学杂志，1999。(C) 1999 Wiley-Liss, Inc。
New theoretical and practical concepts are presented for considerably enhancing the performance of magnetic resonance imaging (MRI) by means of arrays of multiple receiver coils. Sensitivity encoding (SENSE) is based on the fact that receiver sensitivity generally has an encoding effect complementary to Fourier preparation by linear field gradients. Thus, by using multiple receiver coils in parallel scan time in Fourier imaging can be considerably reduced. The problem of image reconstruction from sensitivity encoded data is formulated in a general fashion and solved for arbitrary coil configurations and k-space sampling patterns. Special attention is given to the currently most practical case, namely, sampling a common Cartesian grid with reduced density. For this case the feasibility of the proposed methods was verified both in vitro and in vivo. Scan time was reduced to one-half using a two-coil array in brain imaging. With an array of five coils double-oblique heart images were obtained in one-third of conventional scan time. Magn Reson Med 42:952-962, 1999. (C) 1999 Wiley-Liss, Inc.