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Catheter tracking using continuous radial MRI
Magnetic Resonance in Medicine
|June 1, 1997
Summary
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.
- 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.