[Collecting system percutaneous access using MR-assisted guidance: first human phantom experience].

Objective: Precise renal puncture is an essential but challenging step for successful percutaneous nephrolithotomy. We evaluated the efficiency of a novel real-time navigation system using Mixed Reality(MR) technology for human phantom kidney puncture. Methods: One human kidney phantom underwent MR-assisted percutaneous collecting system puncture. Two punctures were performed by each of 6 surgeons in the randomize selected upper, middle or lower calyces. Outcome measurements were the number of attempts for renal puncture, the time needed to evaluate the trajectory and to perform percutaneous puncture. Results: A total of 12 punctures were performed successfully using MR-Assisted Guidance. Median evaluation time and renal puncture time for the selected calyces was 13 (range 11 to 19) and 19 seconds (range 15 to 44), respectively. One or Two attempts were needed to achieve a successful renal puncture for all of the surgeons. Conclusions: The proposed MR-assisted guidance solution for renal collecting system puncture proved to be accurate, simple and quick. The inherent limitations of traditional X - ray and ultrasonic technology can be overcome.目的： 应用实验用肾脏模型验证了一种新型基于混合现实技术的经皮肾穿刺方法，为经皮肾镜碎石取石术中经皮肾穿刺技术提供精准引导。 方法： 6位泌尿外科医生对实验用肾脏模型进行了混合现实引导的经皮肾穿刺。统计每位医生计划穿刺的时间，尝试穿刺的次数以及穿刺的时间。 结果： 成功完成12次穿刺，中位计划时间和穿刺时间分别为13 (11～19)s和19 (15～44)s，所有医生进行1～2次穿刺即可确认穿刺成功。 结论： 使用混合现实引导的经皮肾穿刺，有助于提高经皮肾穿刺的准确性，可以克服传统X线和超声技术的内在局限性，需要通过动物实验、临床试验来进一步验证。.