A Comparison of Ultrasonography and Radiography in the Localization of Renal Calculi: Experimental and Operative Experience

Abstract

The capabilities of radiography (mammography film) and ultrasonography (7 MHz. probe) were investigated in cadaver kidneys. Stones of varying size and composition were studied. Clinically, 11 patients were studied with intraoperative radiography and ultrasonography. Both techniques appeared to localize calculi > 3 mm. with high consistency in cadaver kidneys and in patients. Real-time B scan ultrasonography is a rapid and accurate technique that has the ability to identify lucent calculi. When used in association with intraoperative radiography, intraoperative ultrasonography can be a great aid in the surgical removal of renal calculi.