MP20-04 DEVELOPMENT AND VALIDATION OF A URETERORENOSCOPY NON-TECHNICAL SKILLS CURRICULUM

METHODS: We used medical imaging processing software (Mimics, Materialise Inc., Belgium) to convert computed tomography (CT) images into patient-specific 3D computer-aided designs (CAD) of renal and stone anatomy.Three fused deposition polyjet thermoplastics technologies (Stratasys Ltd.MN, USA) were used to manufacture 3 different stone-containing renal models.We assessed the educational utility of the VeroClear model (item C, figure 1) by administering a questionnaire to 12 urology residents and fellows after they viewed the model and CT imaging (Group A) or imaging alone (Group B).The questionnaire consisted of 5 items assessing familiarity with stone location, shape and orientation, ability to determine the optimal calyx of entry and make an operative plan, and overall confidence in performing PCNL using a rating system from 1 (no confidence) to 10 (very confident).RESULTS: We successfully manufactured 3 patient-specific 3D kidney models containing anatomically-accurate staghorn stones using 3 different 3D printing technologies (Figure 1).Average trainee questionnaire scores were 38/50 and 29/50 for Group A and Group B, respectively (p¼0.15).Group A trended toward higher familiarity with stone shape and orientation (8.2/10 vs. 6.2/10,p¼0.097), greater ability to determine optimal calyx of entry (8.17/10 vs. 5.2/10, p¼0.11), and greater overall confidence in performing PCNL (6.7/10 vs. 4.67/10, p¼0.12).All trainees (6/6) using the renal model reported it was useful.CONCLUSIONS: Our pilot data reflected a trend favoring the 3D printed models as a useful training tool for urology residents and fellows.Further study is in progress with regard to creating preoperative patient specific models to aid in patient education, resident training, and surgeon planning for successful PCNL.