Objective To evaluate the effect and safety of the frequency-doubled double-pulse U-100 neodymium of YAG (Nd:YAG) laser lithotripsy of calculi in the urinary tract.

• 目的 探讨双频双脉冲U 10 0掺钕钇铝石榴石 (Nd :YAG )激光粉碎泌尿系结石的疗效及安全性。