Methods 30 tracts with ureterohydronephrosis in 21 cases were examined with the coronary heavily T2WI FSE sequence by GE 0.5 T machine to yield the source images of MRU. All the images were reconstructed with maximum intensity projection(MIP).

• 方法 21例患者伴不同程度肾盂输尿管积水共30条；采用GE0.；5T磁共振机检查；应用FSE序列重T2WI获得MRU冠状位原始单层图像；所有图像均作最大信号投影(MIP)重建。