There is a lack of consensus on definitions for the success of endourological stone treatments. The zero-fragment rate (residual fragments [RFs] <1 mm) is now considered more accurate than the stone-free rate (RFs ≤4 mm). As stone volume may be adopted as the recommended method for preoperative estimation of the stone burden, the volumetric stone-free rate may be superior to standard linear RF measurements in defining success.

中文翻译：

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重新思考腔内泌尿外科的无结石率和手术结果：PEARLS 成员的观点


对于腔内泌尿结石治疗成功的定义缺乏共识。现在认为零碎片率（残留碎片 [RFs] <1 mm）比无结石率（RFs ≤4 mm）更准确。由于结石体积可作为术前估计结石负荷的推荐方法，因此在定义成功方面，体积无结石率可能优于标准线性射频测量。