RT Journal Article SR Electronic T1 Learning Needle Placement in Soft Tissue With Robot-assisted Navigation JF In Vivo JO In Vivo FD International Institute of Anticancer Research SP 702 OP 708 DO 10.21873/invivo.13131 VO 37 IS 2 A1 PHILIPP LAUTENSCHLAEGER A1 NILS RATHMANN A1 ANDREAS ROTHFUSS A1 MARKUS KUHNE A1 SIMON STORK A1 MATTHIAS NOLL A1 SVETLANA HETJENS A1 STEFAN O. SCHOENBERG A1 JAN STALLKAMP A1 STEFFEN DIEHL YR 2023 UL http://iv.iiarjournals.org/content/37/2/702.abstract AB Background/Aim: The aim of this phantom study was to evaluate the learning curves of novices practicing how to place a cone-beam computed tomography (CBCT)-guided needle using a novel robotic assistance system (RAS). Materials and Methods: Ten participants performed 18 punctures each with random trajectories in a phantom setting, supported by a RAS over 3 days. Precision, duration of the total intervention, duration of the needle placement, autonomy, and confidence of the participants were measured, displaying possible learning curves. Results: No statistically significant differences were observed in terms of needle tip deviation during the trial days (mean deviation day 1: 2.82 mm; day 3: 3.07 mm; p=0.7056). During the trial days, the duration of the total intervention (mean duration: day 1: 11:22 min; day 3: 07:39 min; p<0.0001) and the duration of the needle placement decreased (mean duration: day 1: 03:17 min; day 3: 02:11 min; p<0.0001). In addition, autonomy (mean percentage of achievable points: day 1: 94%; day 3: 99%; p<0.0001) and confidence of the participants (mean percentage of achievable points: day 1: 78%; day 3: 91%; p<0.0001) increased significantly during the trial days. Conclusion: The participants were already able to carry out the intervention precisely using the RAS on the first day of the trial. Throughout the trial, the participants’ performance improved in terms of duration and confidence.