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In Situ Flexible Needle Adjustment Towards MRI-Guided Spinal Injections Based on Finite Element Simulation.

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Summary
This summary is machine-generated.

This study explores robotic needle manipulation for precise spinal injections when real-time MRI guidance is unavailable. The method shows promise for improving accuracy in robot-assisted procedures.

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Area of Science:

  • Robotics
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Robot-assisted spinal injections are advancing medical procedures.
  • Real-time MRI guidance is often limited during spinal interventions.
  • Accurate needle placement is critical for effective spinal injections.

Purpose of the Study:

  • To investigate robotic needle manipulation for *in situ* tip correction.
  • To enhance needle insertion accuracy in robot-assisted spinal injections without real-time feedback.
  • To address limitations of real-time MRI guidance in spinal procedures.

Main Methods:

  • Developed an open-loop control strategy for needle tip correction.
  • Utilized finite element simulation for control derivation.
  • Tested the method with *ex vivo* animal muscle tissues.
  • Validated results using cone beam computed tomography.

Main Results:

  • Demonstrated the feasibility of *in situ* robotic needle manipulation.
  • Showcased potential for improved needle insertion accuracy.
  • Preliminary results indicate the method's promise in challenging scenarios.

Conclusions:

  • Robotic *in situ* needle manipulation is a viable approach for spinal injections.
  • This technique can improve accuracy when real-time feedback is unavailable.
  • Further development could enhance robot-assisted spinal intervention safety and efficacy.