We present a prospective study assessing the iPerc performance of 30 urologists with an experience of less than 5 in vivo PCNL procedures (14 residents and 16 attendings in practice). Participants were scored before and after 20 attempts of puncture in our percutaneous access model. The evaluated parameters included KAT, ERT, number of angle-of-vision shifts and number of needle adjustments at 0 and 30 degrees.RESULTS: By the end of the training, the time required to complete the evaluated tasks decreased significantly: KAT (figure 1) improved from a median of 148 to 77 seconds (p¼0.000) and the ERT (figure 2) improved from a median of 101.5 to 45.5 seconds (p¼0.000), the overall results are displayed on table 1.CONCLUSIONS: Training in the iPerc model simulates the challenges a surgeon faces during the performance of PCNL procedures, improving ERT and KAT among users. This is a safe and effective training device that neither requires the use of laboratory animals nor radiation exposure.