Hederström E, Forsberg L
Acta Radiol Diagn (Stockh). 1985 Sep-Oct;26(5):603-7. doi: 10.1177/028418518502600517.
The accuracy of repeated sonographic and urographic kidney length measurements in kidney size evaluation was investigated in 80 children 0 to 14 years of age, mean age 4.5 years. At sonography 250 kidney lengths were compared. A difference of 0 to 1.0 cm in repeated length measurement was considered to be good accuracy and 94 per cent of right and 96 per cent of left kidney lengths were found within this interval--a better result than for urography with 76 per cent of repeated right kidney and 79 per cent of kidney lengths within the same interval (94 lengths). Both methods display a variation of kidney length which may lead to under- and overestimation of kidney size and growth. The investigation thus indicates good accuracy for repeated sonographic kidney size assessment which should be repeated often enough to establish a growth chart displaying the trend rather than rely too much on single measurements. Sonography can be highly recommended as a convenient and harmless alternative to urography.
在80名0至14岁（平均年龄4.5岁）的儿童中，研究了重复超声检查和尿路造影测量肾脏长度在评估肾脏大小方面的准确性。在超声检查中，对250次肾脏长度进行了比较。重复长度测量相差0至1.0厘米被认为准确性良好，结果发现94%的右肾长度和96%的左肾长度在此范围内——这一结果优于尿路造影，尿路造影中76%的右肾重复长度和79%的肾脏长度（共94次测量）在同一范围内。两种方法都显示出肾脏长度的变化，这可能导致对肾脏大小和生长的低估和高估。因此，该研究表明重复超声评估肾脏大小具有良好的准确性，应该经常重复测量以建立显示生长趋势的生长图表，而不是过度依赖单次测量。强烈推荐超声检查作为尿路造影的一种方便且无害的替代方法。
