Moonen C T, Liu G, van Gelderen P, Sobering G
NMR Research Center, BEIP, NCRR, National Institutes of Health, Bethesda, Maryland 20892.
Magn Reson Med. 1992 Jul;26(1):184-9. doi: 10.1002/mrm.1910260118.
A fast imaging method that is based on gradient-recalled echoes of spins whose excitation and echo formation are separated by more than one TR period is presented. This method does not incorporate chemical-shift refocusing and thus results in drastically increased sensitivity to dynamic susceptibility effects, while maintaining a short total imaging time. The efficiency of the new technique is demonstrated in dynamic contrast-enhanced experiments (bolus tracking) in the cat brain using a duration of 600 ms for each image. Blood volume maps are derived with expected contrast between white and gray matter.
提出了一种基于自旋梯度回波的快速成像方法，其自旋的激发和回波形成被分隔超过一个重复时间（TR）周期。该方法不包含化学位移重聚焦，因此在保持较短总成像时间的同时，对动态磁化率效应的敏感度大幅提高。在猫脑的动态对比增强实验（团注追踪）中，使用每张图像600毫秒的时长，证明了这项新技术的有效性。得出了具有预期白质和灰质对比度的血容量图。
