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Related Experiment Video

Updated: Jun 5, 2026

A Spine Robotic-Assisted Navigation System for Pedicle Screw Placement
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Published on: May 11, 2020

Towards Robot-Assisted MRI-Guided Lumbar Injections.

Tyler Lehrfeld1,2, Qinhan Wang1,2, Aabhas Jain1,2

  • 1Laboratory for Computational Sensing and Robotics, Johns Hopkins University, Baltimore, MD 21218, USA.

... International Symposium on Medical Robotics. International Symposium on Medical Robotics
|June 4, 2026
PubMed
Summary
This summary is machine-generated.

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A new MRI-compatible robotic system enhances lumbar epidural injections. This robot-assisted approach achieves sub-millimeter precision for accurate drug delivery, improving patient outcomes.

Area of Science:

  • Robotics
  • Medical Imaging
  • Neurosurgery

Background:

  • Precise needle placement is critical for effective lumbar epidural injections.
  • Intraoperative MRI guidance combined with robotic assistance offers enhanced accuracy and dexterity.

Purpose of the Study:

  • To present a 4-degree-of-freedom (DOF) MRI-compatible robotic system for assisting lumbar injections.
  • To improve the accuracy and consistency of lumbar epidural procedures.

Main Methods:

  • Designed a modular robotic system with an actuation unit, linkage mechanism, and needle placer.
  • Derived system kinematics and implemented a control framework with backlash compensation.
  • Conducted workspace analysis and experimental validation of the prototype.

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Magnetic Resonance-Guided Stereotaxy for Infusions to the Pig Brain
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Last Updated: Jun 5, 2026

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Lumbar Intrathecal Injection of SOD1-ASOs for Precise CNS Targeting and Predictive Efficacy in Human SOD1-G93A ALS Mice
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Lumbar Intrathecal Injection of SOD1-ASOs for Precise CNS Targeting and Predictive Efficacy in Human SOD1-G93A ALS Mice

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Main Results:

  • The system demonstrated an effective workspace of ±72.9 mm (medial-lateral) and ±32.5 mm (superior-inferior) with >25° tilting range.
  • Experimental evaluation validated sub-millimeter precision with an average deviation of 0.33 mm.
  • Confirmed the feasibility of accurate and repeatable needle guidance.

Conclusions:

  • The developed MRI-compatible robotic system shows significant potential for robot-assisted, MRI-guided lumbar injections.
  • This technology marks a step toward clinical translation for improved procedural accuracy and patient safety.