Kressler Bryan, Spincemaille Pascal, Nguyen Thanh D, Cheng Liuquan, Xi Hai Zhao, Prince Martin R, Wang Yi
Department of Biomedical Engineering, Cornell University, Ithaca, New York, USA, and Department of Radiology, Chinese PLA General Hospital, Beijing, China.
Magn Reson Med. 2007 Sep;58(3):535-43. doi: 10.1002/mrm.21365.
A single breath-hold 3D cardiac phase resolved steady-state free precession (SSFP) sequence was developed, allowing 3D visualization of the moving coronary arteries. A 3D stack of spirals was acquired continuously throughout the cardiac cycle, and a sliding window reconstruction was used to achieve high temporal resolution. A coil specific field of view reconstruction technique was combined with Parallel Imaging with Localized Sensitivities (PILS) to allow acquisition of a reduced field of view. A view ordering incorporating fat suppression was employed to allow use of sliding window reconstruction. The technique was evaluated on healthy volunteers (n=8), yielding images with 102 ms temporal resolution and 1.35 mm in-plane resolution, and reasonable visualization of the left and right coronary arteries was achieved.
开发了一种单次屏气三维心脏相位分辨稳态自由进动（SSFP）序列，可实现对移动冠状动脉的三维可视化。在整个心动周期中连续采集三维螺旋堆栈，并使用滑动窗口重建来实现高时间分辨率。将线圈特定视野重建技术与具有局部灵敏度的并行成像（PILS）相结合，以允许采集缩小的视野。采用包含脂肪抑制的视图排序，以允许使用滑动窗口重建。该技术在健康志愿者（n = 8）上进行了评估，获得了时间分辨率为102 ms、平面分辨率为1.35 mm的图像，并实现了左右冠状动脉的合理可视化。
