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Related Experiment Video

Updated: Feb 7, 2026

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
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[Collecting system percutaneous access using MR-assisted guidance: first human phantom experience].

H Zhu1, N C Li, Z C Zhao

  • 1Wu Jieping Urology Center, Shougang Hospital, Peking University, Beijing 100144, China.

Zhonghua Yi Xue Za Zhi
|July 12, 2018
PubMed
Summary

Mixed Reality (MR) navigation enhances kidney phantom puncture accuracy for percutaneous nephrolithotomy. This novel system offers a quick and simple solution, overcoming limitations of traditional imaging methods.

Keywords:
Kidney calculiMixed realityNephrostomy, percutaneousRenal puncture

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Area of Science:

  • Urology
  • Medical Technology
  • Surgical Navigation

Background:

  • Precise renal puncture is critical for percutaneous nephrolithotomy but technically demanding.
  • Traditional imaging like X-ray and ultrasound have inherent limitations for real-time guidance.
  • Novel navigation systems are needed to improve the accuracy and efficiency of renal access.

Purpose of the Study:

  • To evaluate the efficiency of a novel Mixed Reality (MR) real-time navigation system for human phantom kidney puncture.
  • To assess the accuracy and speed of MR-assisted renal collecting system puncture.
  • To compare the performance of MR guidance against traditional methods.

Main Methods:

  • A human kidney phantom was used for MR-assisted percutaneous collecting system puncture.
  • Six surgeons performed two punctures each in randomly selected calyces.
  • Outcome measures included puncture attempts, trajectory evaluation time, and puncture time.

Main Results:

  • All 12 punctures were successfully completed using MR-Assisted Guidance.
  • Median evaluation time was 13 seconds, and median puncture time was 19 seconds.
  • All surgeons achieved successful renal puncture within one or two attempts.

Conclusions:

  • The MR-assisted guidance system demonstrated accuracy, simplicity, and speed for renal collecting system puncture.
  • This technology can potentially overcome the limitations of conventional X-ray and ultrasonic guidance.
  • MR navigation represents a promising advancement for percutaneous nephrolithotomy procedures.