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Catheter tracking using continuous radial MRI

V Rasche1, D Holz, J Köhler

  • 1Philips GmbH Forschungslaboratorien, Hamburg, Germany.

Magnetic Resonance in Medicine
|June 1, 1997
PubMed
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This study presents continuous radial MRI for real-time guidance of minimally invasive procedures. The technique simultaneously images anatomy and tracks devices using small RF-coils (mu-coils) without increasing scan time.

Area of Science:

  • Medical Imaging
  • Interventional Radiology
  • Magnetic Resonance Imaging

Background:

  • Minimally invasive procedures require precise guidance.
  • Magnetic Resonance Imaging (MRI) offers advanced anatomical visualization.
  • Real-time tracking of invasive devices is crucial for interventional success.

Purpose of the Study:

  • To introduce continuous radial MRI for simultaneous anatomical imaging and device tracking.
  • To enable real-time in-plane and 3D position tracking of invasive devices.
  • To demonstrate automated slice positioning based on device location.

Main Methods:

  • Utilized continuous radial MRI sequence.
  • Integrated small radiofrequency coils (mu-coils) onto invasive devices like catheters and biopsy needles.

Related Experiment Videos

  • Performed phantom studies to evaluate tracking accuracy and temporal resolution.

    • Main Results:

    • Achieved simultaneous acquisition of anatomical MR images and device position.
    • Demonstrated in-plane tracking of invasive devices without prolonging acquisition time.
    • Showcased real-time automatic slice position adjustment with 100 ms temporal resolution.

    Conclusions:

    • Continuous radial MRI is a promising technique for guiding minimally invasive procedures.
    • The method allows for precise, real-time tracking of interventional devices.
    • This approach enhances safety and efficacy in interventional radiology.