ArticleMagnetic resonance in medicine2025
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.
Article in Magnetic resonance in medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- SAR validation of RF coils and implants in a B0-free RF safety laboratory.Medical physics · 2026Article
- Feasibility of Magnetic Resonance Imaging-Guided Pulmonary Artery Stenting in a Commercial Wide-Bore 0.55-T Scanner.JACC. Basic to translational science · 2026Article
- Reducing RF-Induced Heating of DBS in 3 T MRI Using Dual-Role Receive Arrays as Wireless Resonators: A Simulation Study.IEEE access : practical innovations, open solutions · 2026Article
- 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
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Authors and funding
8 authors.
Funding
Abstract
purposeLow-field MRI has been assumed to be implant-friendly based on limited studies. However, radiofrequency (RF)-induced heating due to an implant is a complex resonance phenomenon, highly dependent on the implant's configurations and applied RF frequencies. This study aims to evaluate the RF heating of deep brain stimulation (DBS) implants during MRI at low field strengths compared with higher-field 1.5T MRI.
methodsA commercial DBS implant was used in full system as well as lead-only configurations to evaluate and compare RF heating during MRI at 0.55 T and 1.5 T. The transfer function of the device was measured and validated at each of the frequencies, which was then used for prediction of RF heating with realistic DBS configurations at head, chest, and abdomen imaging landmarks.
resultsFor the lead-only case, the RF heating due to the DBS was substantially smaller during imaging at 0.55 T compared with that at 1.5 T. However, for the full DBS system (longer implant), the RF heating at 0.55 T was comparable to, and for some cases even higher than, that at 1.5 T, reaching a level that poses risk of tissue damage in patients.
conclusionsAlthough RF heating generally tends to be lower at low-field MRI, the case with longer implanted leads demands extra caution, due to the higher possibility of matching resonant condition at low-field-strength frequencies. Thus, specific risk evaluation for each implant and configuration is required rather than assuming that lower field strength imaging is safer.
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