Pruessmann K P, Weiger M, Scheidegger M B, Boesiger P
Institute of Biomedical Engineering and Medical Informatics, University of Zürich and Swiss Federal Institute of Technology Zürich, Zürich, Switzerland.
Magn Reson Med. 1999 Nov;42(5):952-62.
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.
本文提出了一些新的理论和实践概念，旨在通过使用多个接收线圈阵列显著提高磁共振成像（MRI）的性能。灵敏度编码（SENSE）基于这样一个事实：接收灵敏度通常具有与线性场梯度进行傅里叶准备互补的编码效果。因此，通过并行使用多个接收线圈，傅里叶成像中的扫描时间可以大幅缩短。从灵敏度编码数据进行图像重建的问题以通用方式进行了阐述，并针对任意线圈配置和k空间采样模式得到了解决。特别关注了当前最实际的情况，即对密度降低的普通笛卡尔网格进行采样。对于这种情况，所提出方法的可行性在体外和体内均得到了验证。在脑部成像中使用双线圈阵列时，扫描时间减少到了原来的一半。使用五线圈阵列时，在传统扫描时间的三分之一内获得了双斜位心脏图像。《磁共振医学》42:952 - 962，1999年。
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