ArticleJournal of neurosurgery2024
Effect of surgical modification of deep brain stimulation lead trajectories on radiofrequency heating during MRI at 3T: from phantom experiments to clinical implementation.
Article in Journal of neurosurgery, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 17 citations in OpenAlex.
- Weight-Guided Constraints for Body Model and Lead Selection in Pediatric CIED MRI Safety Simulations.ArXiv · 2026Article
- Implant-friendly MRI of deep brain stimulation patients at 3T.NeuroImage · 2026Article
- Safety of 3 Tesla Magnetic Resonance Imaging in Active Peripheral Nerve Field Stimulation Device for Facial Pain.Stereotactic and functional neurosurgery · 2026Article
- Read My Leads: Subject-Specific RF Hazard Assessment and Mitigation for DBS Implants in MRI.Magnetic resonance in medicine · 2026Article
- Reduction of RF Heating Near Bilateral Deep Brain Stimulation Leads Using Two-Channel RF Shimming at 3T.NMR in biomedicine · 2025Article
- Comparative study of radiofrequency heating in deep brain stimulation devices during MRI at 1.5 T and 0.55 T: Challenging the assumption of safety at low field strengths.Magnetic resonance in medicine · 2025Article
- Modeling and measurement of lead tip heating in implanted wires with loops.Physics in medicine and biology · 2025Article
- A deep brain stimulation-conditioned RF coil for 3T MRI.Magnetic resonance in medicine · 2025Article
- Design of multi-row parallel-transmit coil arrays for enhanced SAR efficiency with deep brain electrodes at 3T: an electromagnetic simulation study.Magma (New York, N.Y.) · 2025Article
- Modeling and measurement of lead tip heating and resonant length for implanted, insulated wires.Magnetic resonance in medicine · 2024Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
objectiveRadiofrequency (RF) tissue heating around deep brain stimulation (DBS) leads is a well-known safety risk during MRI, resulting in strict imaging guidelines and limited allowable protocols. The implanted lead's trajectory and orientation with respect to the MRI electric fields contribute to variations in the magnitude of RF heating across patients. Currently, there are no surgical requirements for implanting the extracranial portion of the DBS lead, resulting in substantial variations in clinical lead trajectories and consequently RF heating. Recent studies have shown that incorporating concentric loops in the extracranial lead trajectory can reduce RF heating. However, optimal positioning of the loops and the quantitative benefit of trajectory modification in terms of added safety margins during MRI remain unknown. In this study, the authors systematically evaluated the characteristics of DBS lead trajectories that minimize RF heating during 3T MRI to develop the best surgical practices for safe access to postoperative MRI, and they present the first surgical implementation of these modified trajectories.
methodsThe authors performed experiments to assess the maximum temperature increase of 244 distinct lead trajectories. They investigated the effect of the position, number, and size of the concentric loops on the skull. Experiments were performed in an anthropomorphic phantom implanted with a commercial DBS system, and RF exposure was generated by applying a high specific absorption rate sequence (B1+rms = 2.7 µT). The authors conducted test-retest experiments to assess the reliability of measurements. Additionally, they evaluated the effect of imaging landmarks and perturbations to the DBS device configuration on the efficacy of low-heating trajectories. Finally, two neurosurgeons implanted the recommended modified trajectories in patients, and the authors characterized their RF heating in comparison with unmodified trajectories.
resultsThe maximum temperature increase ranged from 0.09°C to 7.34°C. The authors found that increasing the number of loops and positioning them closer to the surgical burr hole, particularly for the contralateral lead, substantially reduced RF heating. These trajectory modifications were easily incorporated during the surgical procedure and resulted in a threefold reduction in RF heating.
conclusionsSurgically modifying the extracranial portion of the DBS lead trajectory can substantially reduce RF heating during 3T MRI. The authors' results indicate that simple adjustments to the lead's configuration, such as small, concentric loops near the burr hole, can be readily adopted during DBS lead implantation to improve patient safety during MRI.
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