Philips Research Europe, Hamburg, Germany.
J Magn Reson Imaging. 2010 Nov;32(5):1262-7. doi: 10.1002/jmri.22336.
To integrate water-fat-resolved spiral gradient-echo imaging with off-resonance correction into a clinical MR scanner and to evaluate its basic feasibility and performance.
Three-point chemical shift imaging was implemented with forward and strongly T(2)*-weighted reverse spiral sampling and with off-resonance correction after water-fat separation. It was applied in a volunteer study on single breathhold abdominal imaging, which included a brief comparison with Cartesian sampling.
Water-fat-resolved, off-resonance-corrected forward and reverse three-dimensional interleaved spiral imaging was found to be feasible on a clinical MR scanner with only minor changes to the existing data acquisition and reconstruction, and to provide good image quality. Three-point chemical shift encoded data thus support both, water-fat separation and off-resonance correction with high accuracy.
The combination of chemical shift encoding and appropriate postprocessing could pave the way for water-fat-resolved spiral imaging in clinical applications.
将水脂分辨螺旋梯度回波成像与离频校正整合到临床磁共振扫描仪中，并评估其基本可行性和性能。
采用三点化学位移成像，进行正向和强 T(2)*加权反转螺旋采样，并在水脂分离后进行离频校正。在单屏气腹腹部成像的志愿者研究中应用，与笛卡尔采样进行简要比较。
在临床磁共振扫描仪上，水脂分辨、离频校正的正向和反向三维交错螺旋成像具有可行性，仅对现有数据采集和重建进行了微小改动，并提供了良好的图像质量。三点化学位移编码数据因此支持水脂分离和高精度的离频校正。
化学位移编码与适当的后处理相结合，可以为临床应用中的水脂分辨螺旋成像铺平道路。
