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目的探讨数字化断层融合对无压迫性静脉尿路造影诊断泌尿系结石的应用价值.方法选择2009-2012年临床怀疑泌尿系结石的患者227例,其中不宜行传统静脉肾盂造影的患者25例,进行断层融合检查,其他患者随机分组进行传统静脉肾盂造影检查或数字化断层融合检查,记录两种检查方法诊断泌尿系结石的情况,以CT检查或临床随访结果进行对照.结果共发现泌尿系结石33例.数字化融合断层无压迫性静脉尿路造影组126例患者中,诊断肾结石14例,输尿管结石2例,最小结石直径0.3cm,经CT或临床证实,发现漏诊1例.传统静脉尿路造影组101例患者中,诊断肾结石13例,输尿管结石2例,最小结石直径0.5cm,CT或临床证实,漏诊1例.DTS无压迫低张性尿路造影组,诊断泌尿系结石的敏感性94.12%,特异性99.08%.传统造影检查组,诊断泌尿系结石的敏感性87.5%,特异性97.65%.结论在泌尿系结石诊断中,与传统静脉尿路造影相比,数字化融合断层无压迫性静脉尿路造影可以发现更多的、更小的结石,患者耐受情况更好.“,”Objective To explore the clinical application value of the digital tomosynthesis system with no oppression intravenous urography in diagnosis of urinary stones. Methods 2009-2012 227 clinical suspicion of urinary calculi patients, including 25 cases of patients should not undergo conventional intravenous pyelography, undergo digital tomosynthesis system with no oppression intravenous pyelography, other patients were randomized to undergo the conventional intravenous pyelography inspection or digital tomosynthesis system with no oppression intravenous pyelography, recording two methods of diagnosis of urinary calculi, CT examination or clinical follow-up results were compared. Results In 227 patients, urinary calculi were found in 33 cases. digital tomosynthesis system with no oppression intravenous pyelography group: 126 patients, the diagnosis of kidney stones in 14 cases, 2 cases of ureteral stones, smallest stone diameter 0.3cm, confirmed by CT or clinical, one cases were found missed. The traditional intravenous urography group: 101 patients, 13 cases of diagnosis of kidney stones, ureteral stones two cases, the minimum diameter of the stones was 0.5cm, CT or clinically proven, one case were missed. DTS with no oppression urography group, sensitivity 94.12%, specificity 99.08% of the diagnosis of urinary stones. Conventional intravenous pyelography group: the diagnosis of urinary stones sensitivity 87.5%, specificity of 97.65%. Conclusion Compared with conventional intravenous urography in the diagnosis of urinary calculi, digital tomosynthesis system with no oppression intravenous pyelography can find more, smaller stones, patients better tolerated.