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评价诊断输尿管结石的方法。方法应用药物增强超声显像，检测51例疑输尿管结石患者，其中44例经临床证实为结石，7树无结石。结果药物增强超声显像方法诊断输尿管结石的敏感度为88．6％，特异度为85．7％，准确度为88．2％。上述三项指标与常规B超检查相比，均有显著性差异（P＜0．01），且有优于X线检查的趋势。结论该方法简单易行，准确度高，无副作用，可作为诊断输尿管结石的首选方法。
Evaluation of the diagnosis of ureteral calculi. Methods 51 patients with suspected ureteral calculi were examined with enhanced ultrasound imaging. Among them, 44 were clinically proven as stone and 7 were stone-free. Results The sensitivity, specificity and accuracy of the drug-enhanced ultrasound imaging in the diagnosis of ureteral calculi were 88.6%, 85.7% and 88.2% respectively. The above three indexes were significantly different from the conventional B-ultrasound (P <0.01), and there was a trend better than X-ray examination. Conclusion The method is simple, accurate, and free from side effects and can be used as the first choice for the diagnosis of ureteral calculi.