acquisition time (ta), signal to noise ratio (snr), contrast to noise ratio (cnr), integrity of vessel wall, blood flow artifact were measured and compared in each group with different parameters.
分别测量和比较各组内不同扫描参数时序列的采集时间(ta)、图像信噪比(snr)、对比噪声比(cnr)、靶血管壁完整性和血流伪影。