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Related Experiment Videos

Navigation with electromagnetic tracking for interventional radiology procedures: a feasibility study.

Bradford J Wood1, Hui Zhang, Amir Durrani

  • 1Diagnostic Radiology Department, National Institutes of Health Clinical Center, Building 10, Room 1C-660, Bethesda, Maryland 20892, USA. bwood@nih.gov

Journal of Vascular and Interventional Radiology : JVIR
|April 2, 2005
PubMed
Summary

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This summary is machine-generated.

This study demonstrates the feasibility of using preprocedural imaging like CT, MR, and PET for guiding medical devices with electromagnetic tracking. The system accurately displays real-time device position, enabling safer image-guided interventions.

Area of Science:

  • Medical Imaging
  • Interventional Radiology
  • Biomedical Engineering

Background:

  • Image-guided interventions require precise navigation of medical devices.
  • Electromagnetic tracking offers a potential solution for real-time device localization.
  • Integrating preprocedural imaging with real-time tracking is crucial for complex procedures.

Purpose of the Study:

  • To evaluate the feasibility of using preprocedural imaging for guiding medical devices (guide wires, catheters, needles) with electromagnetic tracking.
  • To assess the accuracy and reliability of this navigation system in phantom and animal models.

Main Methods:

  • Developed an image-guided intervention software system using open-source components.
  • Integrated position and orientation sensors into device tips.

Related Experiment Videos

  • Utilized a weak electromagnetic field generator and preprocedural CT, MR, or PET datasets.
  • Performed navigation and registration using fiducials in phantom and animal models.

    • Main Results:

    • Accurate determination of device position within phantoms and pigs during procedures.
    • Real-time position updating with minimal registration and tracking errors (<5 mm) using CT.
    • Demonstrated the potential of PET for guiding percutaneous biopsies to metabolically active tumor regions.

    Conclusions:

    • Preprocedural CT, MR, or PET data can be accurately co-displayed with real-time device position and orientation.
    • Multimodality interventions are feasible, enhancing safety and precision.
    • The system supports real-time display of functional or morphologic imaging during angiography, biopsy, and ablation.