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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
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Low-Complexity Robotic Device for Magnetic Resonance Imaging-Guided Needle Biopsy.

Anastasia Antoniou1, Nikolas Evripidou1, Leonidas Georgiou2

  • 1Department of Electrical Engineering, Computer Engineering, and Informatics, Cyprus University of Technology, Limassol, Cyprus.

The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS
|November 7, 2025
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A novel robotic device offers precise, submillimeter needle-to-target alignment for Magnetic Resonance Imaging (MRI)-guided biopsies, enhancing accuracy and physician control in minimally invasive procedures.

Keywords:
MRIabdominalagar phantombiopsyrobotic device

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Area of Science:

  • Medical Robotics
  • Biomedical Engineering
  • Image-Guided Therapy

Background:

  • Developing advanced tools for Magnetic Resonance Imaging (MRI)-guided procedures is crucial for improving diagnostic and therapeutic interventions.
  • Existing methods for MRI-guided biopsy can be complex and time-consuming, necessitating more streamlined approaches.

Purpose of the Study:

  • To present a low-complexity robotic device for precise needle-to-target alignment during MRI-guided biopsy.
  • To maintain physician control over needle insertion while automating alignment tasks.

Main Methods:

  • A robotic device with two linear degrees of freedom was designed for in-plane needle guide alignment.
  • Custom MRI-integrated software managed trajectory planning, motion execution, image transfer, and sequence triggering.
  • Alignment accuracy was evaluated using an agar phantom with 5-mm and 10-mm tumor mimics.

Main Results:

  • The robotic system achieved consistent submillimeter alignment accuracy in phantom experiments for both 5-mm and 10-mm targets.
  • The system demonstrated reliable performance with no operational failures during preliminary evaluations.

Conclusions:

  • The developed robotic device shows feasibility for semi-automated MRI-guided abdominal biopsies.
  • Further extensive preclinical testing is required to validate the system's efficacy and safety in clinical settings.