370-09-071 ISMRM Abstract

Evaluation of Implant-Induced SAR in Low-Field MRI (B0 = 50 mT) Using Representative Geometries

Primary: Physics & Engineering - Safety

Secondary: Physics & Engineering - Low-Field MRI

370-09-071 · Phantoms and Safety · Monday, 11 May, 5:05 PM–6:00 PM · Traditional Posters | Exhibition Hall

Keywords: Low-Field MRI SAR Implant Safety Reference values Electromagnetic simulations

Accepted

Ariane Ernst ¹, Lukas Winter^1,2, Umberto Zanovello³, Frank Seifert¹

¹Biomedical Magnetic Resonance, Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Berlin, Germany

²Open Source Imaging Initiative (OSI²) e.V., Berlin, Germany

³Istituto Nazionale di Ricerca Metrologica, Turin, Italy

Presenting Author: Ariane Ernst

Synopsis

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References

1. Kravchenko D, Hagar MT, Vecsey-Nagy M, Kabat I, Groteklaes A, Luetkens JA et al. Low-field and portable MRI technology: advancements and innovations. Eur Radiol Exp 2025; 9: 103.

2. Kimberly WT, Sorby-Adams AJ, Webb AG, Wu EX, Beekman R, Bowry R et al. Brain imaging with portable low-field MRI. Nat Rev Bioeng 2023; 1: 617–630.

3. Arnold TC, Freeman CW, Litt B, Stein JM. Low-field MRI: Clinical promise and challenges. Journal of Magnetic Resonance Imaging 2023; 57: 25–44.

4. Bhusal B, Sanpitak PP, Jiang F, Richardson J, Seiberlich N, Rosenow JM et al. 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. Magn Reson Med 2025; 94: 785–796.

5. Kranold L, Xi J, Goren T, Kuster N. Dosimetric Electromagnetic Safety of People With Implants: A Neglected Population? Bioelectromagnetics 2025; 46: e70023.

6. Zanovello U. A4IM RF head coil. https://gitlab.com/osii/rf-system/rf-coils/a4im-rf-head-coil.

7. Winter L, Periquito J, Kolbitsch C, Pellicer-Guridi R, Nunes RG, Häuer M et al. Open-source magnetic resonance imaging: Improving access, science, and education through global collaboration. NMR in Biomedicine 2024; 37: e5052.

8. OSI2 ONE MR Scanner. https://www.opensourceimaging.org/project/osii-one/.

9. Cassara’ AM, Weidemann G, Seifert F, Ittermann B. Accurate EM modelling of a not-fully accessible RF body coil at 3T for quantitative SAR investigations. .

10. Iacono MI, Neufeld E, Akinnagbe E, Bower K, Wolf J, Oikonomidis IV et al. MIDA: A Multimodal Imaging-Based Detailed Anatomical Model of the Human Head and Neck. PLOS ONE 2015; 10: e0124126.

11. Baumgartner C, Hasgall P, Di Gennaro F, Neufeld E, Lloyd B, Gosselin M et al. IT’IS Database for thermal and electromagnetic parameters of biological tissues. 2025. doi:10.13099/VIP21000-05-0. [doi]

Cite this abstract

http://echo.ismrm.org/p/ISMRM2026/370-09-071