Purpose or Case Report: In 2014, a new classification system for prenatal and postnatal urinary tract dilatation (UTD) was introduced via a multidisciplinary consensus statement. We have created an easy to use web-based calculator for the prenatal and postnatal UTD classification system which can be used to generate the risk category and the current recommendations for each group. We aim to simplify the overall process for physicians who are either unfamiliar with details of the classification system or apply the classification system infrequently, making it difficult to remember the criteria each time. Moreover, the final risk stratification group and the corresponding current recommendations are automatically copied to the clipboard and can be pasted directly into the imaging report, facilitating the reporting process.
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Conclusions: With the use of this web-based calculator, we hope to encourage the widespread application of the UTD classification system in order to create uniformity in our imaging reports and to generate data needed to validate the classification syste