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Development of an MRI-compatible needle insertion manipulator for stereotactic neurosurgery
K Masamune1, E Kobayashi, Y Masutani
1Department of Precision Machinery Engineering, Faculty of Engineering, University of Tokyo, Japan. masa@miki.pe.u.tokyo.ac.jp
Journal of Image Guided Surgery
|January 1, 1995
Summary
Researchers developed a novel nonmagnetic robot for magnetic resonance imaging (MRI)-guided neurosurgery. This system offers potential for more accurate, minimally invasive procedures compared to current computed tomography (CT)-guided methods.
Area of Science:
- Neurosurgery
- Medical Robotics
- Magnetic Resonance Imaging
Background:
- Stereotactic neurosurgery currently relies heavily on computed tomography (CT) for guidance.
- Existing CT-guided systems have limitations in terms of guidance accuracy.
- Magnetic resonance imaging (MRI) offers advanced visualization techniques like angiography and functional MRI for enhanced surgical planning.
Purpose of the Study:
- To develop a novel needle insertion manipulator for MRI-guided stereotactic neurosurgery.
- To overcome the challenges of actuating robotic systems within strong magnetic fields.
- To improve the accuracy and minimally invasive nature of neurosurgical interventions.
Main Methods:
- The manipulator was constructed using nonmagnetic materials, specifically polyethylene terephthalate (PET) for the system frame.
- Ultrasonic motors were employed for actuation, addressing the issue of magnetic field interference.
- Accuracy was evaluated through rigorous procedures and phantom tests.
Main Results:
- The developed MRI-guided neurosurgery robot achieved a total system accuracy of approximately 3.0 mm.
- No significant artifacts were observed in the MRI images due to the presence of the manipulator.
- The system demonstrated feasibility for use in an MRI environment.
Conclusions:
- The novel nonmagnetic robotic system is suitable for MRI-guided neurosurgery.
- This technology has the potential to enhance the precision and safety of minimally invasive neurosurgical procedures.
- Further development could lead to wider adoption of MRI-guided interventions.