Radiological determination of stone density and skin-to-stone distance-Can it predict the success of extracorporeal shock wave lithotripsy?

This study shows that stone density can help in predicting the outcome of ESWL. We propose that stone densities <500 HU are highly likely to result in successful ESWL. Conversely, stone densities ≥800 HU are less likely to do so. This should be accounted for when considering ESWL.