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Abstract #2865

Is MR-induced RF heating around implanted leads lower at 0.55 T than 1.5 T? Not necessarily.

Pia Panravi Sanpitak1, Bhumi Bhusal1,2, Jasmine Vu1,2, and Laleh Golestanirad1,2
1Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States, 2Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, IL, United States

Synopsis

Keywords: Low-Field MRI, Low-Field MRI, SimulationsLow-field MRI systems have been advertised as “safe” for patients with implants – but is this true? In a series of systematic simulations, we looked at implants with varied length, amount of coiling, and insulation during RF exposure in both 0.55 T and 1.5 T MRI environments. We found that both the actual and apparent length of the implant can significantly impact heating. There are several cases where heating is substantially higher at 0.55 T than 1.5 T, suggesting that no broad claims should be made, and these factors need to be carefully considered before scanning a patient.

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