Real-time ultrasonography: a new tool for the intraoperative localization of renal calculi (preliminary communication).

A B-scan real-time ultrasonic equipment providing three-dimensional information was used for intraoperative localization of renal calculi. Simplicity, non-invasiveness and ability to demonstrate radiolucent calculi or matrix are stress as the main advantages of the method. Its current use on a larger scale is expected and regarded as desirable.