Shared k‐space echo planar imaging with keyhole

Shared k‐space echo planar imaging with keyhole
复制标题

带锁孔的共享 k 空间回波平面成像

DOI:
--
复制
发表时间:
2001
影响因子:
3.3
通讯作者:
N. Shah
N. Shah
中科院分区:
医学3区
文献类型:
--
作者:
M. Zaitsev;K. Zilles;N. Shah

文献摘要

参考文献

被引文献

相似文献

时间依赖现象引起了人们的极大兴趣,研究人员试图用磁共振成像来阐明这些过程,特别是在活体内。在这项工作中,提出了一种新的基于EPI和使用小孔成像概念的混合技术。通过在图像之间共享周边k空间数据和更频繁地获取锁孔,可以保持重建图像的空间分辨率。与单次激发EPI相比,该方法提供了更高的时间分辨率,并且对磁化率和化学位移伪影具有更强的鲁棒性。该方法被称为共享k空间带锁孔回波平面成像(Shared EPIK),已在标准临床扫描仪上实现。给出了技术细节、模拟结果、模型图像、活体图像和功能磁共振结果。这些结果表明,新的方法是稳健的,可以用于动态核磁共振应用。《医学评论》45:109-117,2001。©2001 Wiley-Liss公司
Time‐dependent phenomena are of great interest, and researchers have sought to shed light on these processes with MRI, particularly in vivo. In this work, a new hybrid technique based on EPI and using the concept of keyhole imaging is presented. By sharing peripheral k‐space data between images and acquiring the keyhole more frequently, it is shown that the spatial resolution of the reconstructed images can be maintained. The method affords a higher temporal resolution and is more robust against susceptibility and chemical‐shift artifacts than single‐shot EPI. The method, termed shared k‐space echo planar imaging with keyhole (shared EPIK), has been implemented on a standard clinical scanner. Technical details, simulation results, phantom images, in vivo images, and fMRI results are presented. These results indicate that the new method is robust and may be used for dynamic MRI applications. Magn Reson Med 45:109–117, 2001. © 2001 Wiley‐Liss, Inc.
DOI: 10.1073/pnas.89.12.5675
发表时间: 1992-06-15
影响因子: 11.1
作者:
KWONG, KK;BELLIVEAU, JW;ROSEN, BR
通讯作者: ROSEN, BR
DOI: 10.1073/pnas.89.13.5951
发表时间: 1992-07-01
影响因子: 11.1
作者:
OGAWA, S;TANK, DW;UGURBIL, K
通讯作者: UGURBIL, K