Professor warns of nerve stimulation during MRI
Medical Xpress
February 23, 2026
AI-Generated Deep Dive Summary
A University of Houston engineering professor has raised concerns about the potential for unintended nerve stimulation during MRI scans in patients with implanted cuff electrodes used for treating epilepsy, depression, and inflammatory disorders. These electrodes, which stimulate the vagus nerve, are metallic and positioned near nerve bundles, creating risks due to the fast-switching gradient coils and radio frequency (RF) coil-induced heating in MRI environments. This could lead to unwanted nerve activation or tissue damage.
The professor notes that while these electrodes are widely used for therapeutic purposes, their placement near nerves makes them particularly susceptible to MRI-related issues. The high magnetic fields and rapidly changing gradients in MRI machines can induce electric currents in the metallic components of the electrodes, potentially causing unintended nerve stimulation. Additionally, RF energy from the scanner can generate heat near nerve fibers, posing risks to patients undergoing imaging.
This issue is particularly concerning for patients with implanted devices who require MRI scans for diagnosis or monitoring. Unlike other medical imaging techniques, MRI involves strong magnetic fields and radio waves that can interact with metallic objects in the body, leading to safety concerns. The professor emphasizes the need for further research to better understand these risks and develop safer solutions for patients undergoing MRIs with such implants.
For individuals considering vagus nerve stimulation therapy or those already using implanted electrodes, this information highlights the importance of discussing potential MRI risks with their healthcare providers. While the benefits of these therapies are well-established, understanding and mitigating associated risks is crucial for patient safety. As medical technologies continue to evolve, collaboration between engineers and clinicians will be essential to address challenges like these and ensure safe outcomes for patients.
Overall, this research underscores the need for greater awareness of how implanted devices interact with medical imaging systems. For anyone interested in health and medical advancements, understanding these interactions is vital for making informed decisions about treatments and diagnostic procedures.
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Originally published on Medical Xpress on 2/23/2026