Matsui Shigeru, Masumoto Hidefumi, Hashimoto Takeyuki
Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan.
J Magn Reson. 2007 Jun;186(2):238-42. doi: 10.1016/j.jmr.2007.03.005. Epub 2007 Mar 16.
We propose a method of slice selection in solid-state MRI by combining DANTE selective excitation with magic-echo (ME) line narrowing. The DANTE RF pulses applied at the ME peaks practically do not interfere with the ME line narrowing in the combined ME DANTE sequence. This allows straightforward tailoring of the slice profile simply by introducing an appropriate modulation, such as a sinc modulation, into the flip angles of the applied DANTE RF pulses. The utility of the method has been demonstrated by preliminary experiments performed on a test sample of adamantane.
我们提出了一种在固态磁共振成像（MRI）中进行切片选择的方法，该方法将DANTE选择性激发与魔角回波（ME）线变窄相结合。在ME峰值处施加的DANTE射频脉冲实际上不会干扰组合的ME DANTE序列中的ME线变窄。这使得只需通过在施加的DANTE射频脉冲的翻转角中引入适当的调制（如正弦调制），就能直接调整切片轮廓。该方法的实用性已通过在金刚烷测试样品上进行的初步实验得到证明。
