Liu G, Sobering G, Duyn J, Moonen C T
In Vivo NMR Research Center, BEIP, NCRR, National Institutes of Health, Bethesda, MD 20892.
Magn Reson Med. 1993 Dec;30(6):764-8. doi: 10.1002/mrm.1910300617.
We present a fast MRI technique sensitized to microscopic susceptibility effects. The method combines elements of echo-shifted gradient-recalled MR imaging (TE > TR) with the acquisition of multiple k-space lines within a single TR-period. The sequence results in a much reduced imaging time as compared with conventional gradient-echo MRI methods. The feasibility of the method is demonstrated for susceptibility bolus tracking in the cat brain using an imaging time of 153 ms. The relative cerebral blood volume maps created with this method are comparable with those obtained with conventional methods.
我们提出了一种对微观磁化率效应敏感的快速磁共振成像（MRI）技术。该方法将回波偏移梯度回波磁共振成像（TE > TR）的元素与在单个TR周期内采集多条k空间线相结合。与传统梯度回波MRI方法相比，该序列可显著缩短成像时间。使用153 ms的成像时间，在猫脑的磁化率团注追踪中证明了该方法的可行性。用该方法创建的相对脑血容量图与用传统方法获得的图相当。
