Limitations to Ultrasound in the Detection and Measurement of Urinary Tract Calculi
Limitations to Ultrasound in the Detection and Measurement of Urinary Tract Calculi
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DOI：
10.1016/j.urology.2009.12.015
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发表时间：
2010-08-01
期刊：
影响因子：
2.1
通讯作者：
Honey, R. John D'A.
中科院分区：
文献类型：
--
作者：
Ray, A. Andrew;Ghiculete, Daniela;Honey, R. John D'A.
目的 评估使用计算机断层扫描 (CT) 和超声 (US) 进行结石测量的差异。轴向非增强螺旋 CT 是评估尿路结石的参考标准成像方式；然而，美国也常用。使用这些技术测量结石的差异很少被描述，并且导致测量误差的因素仍然未知。 方法 自 2004 年 6 月以来，我们机构对所有接受腹部 CT 和肾脏 US 的患者进行了回顾，每次间隔不到 1 个月。所有病例均在 CT 和 US 上均发现孤立性肾结石。 结果 我们在 60 名患者中发现了 71 处结石。与 CT 相比，超声检查高估了结石大小，对于较小的结石，这种影响更为明显。 CT 上的平均结石测量值为 7.4 +/- 4.4 毫米，US 上的平均结石测量值为 9.2 +/- 4.5 毫米 (P < .018)。对于石头
OBJECTIVES To evaluate differences in stone measurement using computed tomography (CT) and ultrasound (US). Axial unenhanced helical CT is the reference-standard imaging modality for the assessment of urinary tract calculi; however, US is also commonly used. Differences in stone measurement using these techniques are poorly described and contributors to measurement error remain unknown.METHODS All patients at our institution undergoing both abdominal CT and renal US less than 1 month apart since June 2004 were reviewed. Solitary renal calculi were identified on both CT and US in all cases.RESULTS We identified 71 calculi in 60 patients. Compared with CT, US overestimated stone size, an effect that was more pronounced with smaller calculi. The mean stone measurement on CT was 7.4 +/- 4.4 mm and on US it was 9.2 +/- 4.5 mm (P < .018). For stones