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Related Concept Videos

Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...

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Related Experiment Video

Updated: May 13, 2026

Automatic Surgery in Transcatheter Aortic Valve Replacement Using Augmented Reality
07:46

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Published on: August 9, 2024

Mobile augmented reality for computer-assisted percutaneous nephrolithotomy.

Michael Müller1, Marie-Claire Rassweiler, Jan Klein

  • 1Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany. michael.mueller@dkfz-heidelberg.de

International Journal of Computer Assisted Radiology and Surgery
|March 26, 2013
PubMed
Summary
This summary is machine-generated.

A novel mobile augmented reality (AR) system using a tablet computer aids percutaneous nephrolithotomy (PCNL). This system reduces radiation exposure for physicians and shows potential for improving percutaneous interventions.

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Area of Science:

  • Urology
  • Medical Imaging
  • Augmented Reality

Background:

  • Percutaneous nephrolithotomy (PCNL) is crucial for renal stone treatment.
  • Creating percutaneous renal access is a critical and challenging step in PCNL.

Purpose of the Study:

  • To evaluate the feasibility of a novel mobile augmented reality (AR) system for facilitating PCNL.
  • To assess the system's impact on puncture time and radiation exposure.

Main Methods:

  • A tablet-based AR system was developed, registering camera images with CT scans using fiducial markers.
  • Structures of interest were superimposed semi-transparently onto video feeds.
  • A phantom study involved 53 punctures by an urological trainee and two experts.

Main Results:

  • The trainee using the AR system achieved a mean puncture time of 99 seconds.
  • Experts using fluoroscopy had a faster mean puncture time of 59 seconds.
  • The AR system reduced radiation exposure by a factor of 3 for the trainee and 1.8 for experts.
  • Mean visualization accuracy was 2.5 mm.

Conclusions:

  • The tablet-based AR system is helpful for percutaneous interventions like PCNL.
  • It offers benefits over current state-of-the-art assistance systems, despite lacking depth information.
  • The system's simple integration into clinical workflows highlights its potential impact.