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Related Experiment Videos

Multiple field of view MR fluoroscopy.

Pelin Aksit1, J Andrew Derbyshire, Jean-Michel Serfaty

  • 1Johns Hopkins University School of Medicine, Baltimore, Maryland 21287-0845, USA.

Magnetic Resonance in Medicine
|January 5, 2002
PubMed
Summary

This study introduces a novel real-time imaging technique enabling multiple field-of-view (FOV) visualization during interventional procedures. This method enhances the real-time tracking of guidewires and catheters, improving procedural accuracy.

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Area of Science:

  • Medical Imaging
  • Interventional Radiology
  • Magnetic Resonance Imaging (MRI)

Background:

  • Real-time visualization of interventional devices is crucial for procedural success.
  • Current imaging techniques may have limitations in simultaneously visualizing both device position and surrounding anatomy.

Purpose of the Study:

  • To develop and evaluate a real-time, multiple field-of-view (FOV) imaging technique for enhanced visualization during interventional procedures.
  • To improve the real-time tracking and placement of guidewires and catheters.

Main Methods:

  • Implemented a technique allowing reconstruction of images at multiple FOVs from single or multiple receiver channels.
  • Utilized a loopless catheter antenna as an intravascular probe for MR signal reception.
  • Acquired very-narrow-FOV images for high frame-rate (25 fps) real-time imaging of interventional devices.

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  • Acquired large-FOV images from standard surface coils for anatomical roadmap visualization.

    • Main Results:

    • Demonstrated the ability to reconstruct images at multiple FOVs within each frame.
    • Achieved real-time visualization of guidewire and catheter placement on a dynamic roadmap.
    • Very-narrow-FOV images provided high frame-rate imaging of devices.
    • Simultaneous display of multiple-FOV images improved visualization of device placement.

    Conclusions:

    • The developed multiple-FOV imaging technique significantly enhances real-time visualization of interventional devices.
    • This approach offers improved situational awareness for clinicians during interventional procedures.
    • The technique shows promise for increasing the safety and efficacy of minimally invasive interventions.