Aim: Despite semi-rigid ureteroscopy being the standard treatment for ureteral stones, it is hard to understand whether the treatment has reached success mainly in an early period. It This study aimed to investigate the shape differences in the CT images of kidneys and collecting systems compared between preoperative and postoperative periods terms. Material and Methods: Kidney and collecting system CT images for both terms were evaluated with statistical shape analysis to detect any morphological changes. Results: High levels of kidney deformations were observed at the medial point of the superior segment and the extremitas superior. For the collecting system, a high level of deformation was is seen in the area around the hilum renal inferior. The two periods have no significant shape difference between the kidney and the collecting system. Discussion: The most significant aspect of this study is the quantitative quantitatively demonstration, for the first time, of the shrinking observed in the kidney and collecting systems following treatment for ureteral stones. Our method gives objective and qualitative results by making appropriate landmarks landmarking on the CT image by a physician familiar with the renal anatomy. This new method can be used to follow up stone-induced obstruction due to its ease of application and objective results.