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Updated: Dec 13, 2025
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Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
Published on: April 21, 2013
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Integration and evaluation of a gradient-based needle navigation system for percutaneous MR-guided interventions.
Li Pan1, Steffi Valdeig2, Urte Kägebein3,4
1Siemens Healthineers, Baltimore, MD, United States of America.
Plos One
|July 25, 2020
Summary
This study developed an interactive MRI-guided needle navigation system. The system demonstrated feasibility and accuracy for real-time MR-guided procedures in phantoms and pigs.
Area of Science:
- Medical Imaging
- Interventional Radiology
- Biomedical Engineering
Background:
- Real-time Magnetic Resonance (MR) guidance enhances precision in minimally invasive procedures.
- Accurate needle placement is crucial for effective targeted therapies and diagnostics.
Purpose of the Study:
- To integrate and evaluate an interactive gradient-based needle navigation system for real-time MR-guided puncture.
- To assess the system's feasibility and accuracy in both phantom and in vivo models.
Main Methods:
- Implementation of a gradient-based navigation system within a 1.5T MRI scanner.
- Modification of a real-time MR sequence to track needle holder position via orthogonal pick-up coils.
- Accuracy evaluation using a multi-ring phantom and in vivo assessment in a porcine model.
Main Results:
- Phantom experiments showed an overall error of 6.2±2.9 mm and 4.4±1.3 mm.
- In the porcine model, setup time averaged 176-204 seconds, with needle insertion averaging 96.3±40.5 seconds.
- In vivo, overall error was 8.8±7.8 mm, and system error was 3.3±1.4 mm.
Conclusions:
- The developed interactive gradient-based needle navigation system is feasible for real-time MR-guided procedures.
- The system provides acceptable accuracy for needle puncture in phantom and in vivo settings.
- This technology holds potential for improving the precision of MR-guided interventions.
