Lin Chen, Bernstein Matt A
Department of Radiology, Indiana University School of Medicine, 950 West Walnut Street, Indianapolis, IN 46202, USA.
Magn Reson Med. 2008 Feb;59(2):434-9. doi: 10.1002/mrm.21448.
3D magnetization-prepared fast gradient echo MR sequences, such as MP-RAGE and IR-SPGR, provide good spatial resolution and gray-white contrast. The efficiency and image quality of these techniques can be further improved with an interleaved, recessed elliptical centric view order. It is shown that this novel acquisition strategy, along with skipping the acquisition of views in k-space corners can provide images with higher signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR), while reducing artifact level and scan time compared to standard MP-RAGE.
3D 磁化准备快速梯度回波磁共振序列，如 MP-RAGE 和 IR-SPGR，提供了良好的空间分辨率和灰白对比度。这些技术的效率和图像质量可以通过交错、凹陷的椭圆中心视图顺序得到进一步提高。结果表明，这种新颖的采集策略，连同跳过 k 空间角落的视图采集，可以提供具有更高信噪比（SNR）和对比度噪声比（CNR）的图像，同时与标准 MP-RAGE 相比，降低了伪影水平并缩短了扫描时间。
