采用IDEAL水脂分离技术对臂丛神经和颈椎进行T1加权和T2加权快速自旋回波成像。
T1- and T2-weighted fast spin-echo imaging of the brachial plexus and cervical spine with IDEAL water-fat separation.
作者信息
Reeder Scott B, Yu Huanzhou, Johnson Jane W, Shimakawa Ann, Brittain Jean H, Pelc Norbert J, Beaulieu Christopher F, Gold Garry E
机构信息
Department of Radiology, University of Wisconsin, Madison, Wisconsin 53792-3252, USA.
出版信息
J Magn Reson Imaging. 2006 Oct;24(4):825-32. doi: 10.1002/jmri.20721.
PURPOSE
To compare the iterative decomposition of water and fat with echo asymmetry and least-squares estimation (IDEAL) method with fat-saturated T1-weighted (T1W) and T2W fast spin-echo (FSE) and short-TI inversion recovery (STIR) imaging of the brachial plexus and cervical spine.
MATERIALS AND METHODS
Images acquired at 1.5T in five volunteers using fat-saturated T1W and T2W FSE imaging and STIR were compared with T1W and T2W IDEAL-FSE images. Examples of T1W and T2W IDEAL-FSE images acquired in patients are also shown.
RESULTS
T1W and T2W IDEAL-FSE demonstrated superior fat suppression (P<0.05) and image quality (P<0.05), compared to T1W and T2W fat-saturated FSE, respectively. SNR performance of T1W-IDEAL-FSE was similar to T1W FSE in the spinal cord (P=0.250) and paraspinous muscles (P=0.78), while T2W IDEAL-FSE had superior SNR in muscle (P=0.02) and CSF (P=0.02), and marginally higher cord SNR (P=0.09). Compared to STIR, T2W IDEAL-FSE demonstrated superior image quality (P<0.05), comparable fat suppression (excellent, P=1.0), and higher SNR performance (P<0.001).
CONCLUSION
IDEAL-FSE is a promising method for T1W and T2W imaging of the brachial plexus and cervical spine.
目的
将水脂迭代分解与回波不对称及最小二乘估计（IDEAL）方法，与臂丛神经和颈椎的脂肪饱和T1加权（T1W）、T2加权快速自旋回波（FSE）及短TI反转恢复（STIR）成像进行比较。
材料与方法
对5名志愿者在1.5T场强下采用脂肪饱和T1W和T2W FSE成像及STIR序列采集的图像，与T1W和T2W IDEAL-FSE图像进行比较。还展示了在患者中采集的T1W和T2W IDEAL-FSE图像实例。
结果
与T1W和T2W脂肪饱和FSE相比，T1W和T2W IDEAL-FSE分别表现出更好的脂肪抑制效果（P<0.05）和图像质量（P<0.05）。T1W-IDEAL-FSE在脊髓（P=0.250）和椎旁肌（P=0.78）中的信噪比表现与T1W FSE相似，而T2W IDEAL-FSE在肌肉（P=0.02）和脑脊液（P=0.02）中的信噪比更高，脊髓信噪比略高（P=0.09）。与STIR相比，T2W IDEAL-FSE表现出更好的图像质量（P<0.05）、相当的脂肪抑制效果（极佳，P=1.0）和更高的信噪比表现（P<0.001）。
结论
IDEAL-FSE是一种用于臂丛神经和颈椎T1W和T2W成像的有前景的方法。
Zotero 插件