Simultaneous multislice acquisition using rosette trajectories (SMART): A new imaging method for functional MRI
Simultaneous multislice acquisition using rosette trajectories (SMART): A new imaging method for functional MRI
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DOI：
10.1002/mrm.1910390507
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发表时间：
1998-05-01
影响因子：
3.3
通讯作者：
Boada, FE
中科院分区：
文献类型：
--
作者：
Noll, DC;Peltier, SJ;Boada, FE
提出了一种新的快速全脑功能磁共振成像采集技术。在这项技术中，使用玫瑰花环k空间轨迹和梯度诱导的频率调制同时采集多个切片，这种调制加上玫瑰花环采集的光谱特性允许所有切片单独重建。在功能磁共振研究中，采集率达到16.7至25张/S，是单层片采集的三倍。原始图像显示噪音有所增加。然而，由于这种增加大多是静止的，功能激活图显示噪音只有轻微增加(8%)。
A new acquisition technique for rapid, whole-brain functional MRI is presented. In this technique, several slices are simultaneously acquired using rosette k-space trajectories and a gradient-induced frequency modulation, This modulation together with the spectral properties of the rosette acquisition allow all slices to be reconstructed individually, In functional MRI studies, acquisition rates of 16.7 to 25 images/s were achieved, a threefold improvement over single-slice acquisitions. The raw images showed some increase in noise. However, because this increase is mostly stationary, the functional activation maps showed only a slight increase in noise (8%).