Kim DS, et al. - This study was intended to prognosticate successful dusting of kidney stones during retrograde intrarenal surgery using stone density parameters and histograms measured with non-contrast computed tomography imaging. Researchers included medical records of 49 patients who had undergone retrograde intrarenal surgery between January 2018 and January 2019 at Kyung Hee University Hospital, and the data of 55 stones were assessed. They further assessed patient age, gender, mean stone density, the highest and lowest measured Hounsfield unit (HU), standard deviation and range of the measured HUs, the volume of the most measured HU, and success of dusting. During surgery, 32 stones were successfully dusted. The findings revealed that assessment of stone HU histograms exhibited differences in distribution and proportion. In addition, this will help prognosticate surgical outcomes and prepare for intraoperative complications.