Met hods Seventy six patients with no-opaque ureterolith calculi were t reated with ESWL by retrograde urography and IVU location.

• 方法采用逆行插管造影和IVU联合定位ESWL治疗输尿管阴性结石76例,观察一次性碎石成功率、1个月内结石排净率及不良反应。