Feinberg D A, Oshio K
New York University Medical Center, Radiology Department, New York 10016.
Magn Reson Med. 1994 Oct;32(4):535-9. doi: 10.1002/mrm.1910320418.
Field inhomogeneity related phase errors in multi-shot echo planar imaging (EPI) are directly visualized and analyzed in the spatial frequency domain data or 'k-space'. The echo time shift (ETS) technique incrementally moves the position of the echo train and improves the phase error function by redistributing phase discontinuities away from the center of k-space.
在多激发回波平面成像（EPI）中，与场不均匀性相关的相位误差在空间频率域数据或“k空间”中可直接可视化并进行分析。回波时间偏移（ETS）技术逐步移动回波链的位置，并通过将相位不连续性从k空间中心重新分布来改善相位误差函数。
