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Abstract #4823

Workflow for Personalized RF Safety Assessment of Orthopedic Implants in MRI, a Proof of Concept

Peter Stijnman1,2, Bart Steensma1, Gerrit Melis3, Cornelis van den Berg1, and Alexander Raaijmakers4
1Computational Imaging, UMC Utrecht, Utrecht, Netherlands, 2Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands, 3Radiology, UMC Utrecht, Utrecht, Netherlands, 4Eindhoven University of Technology, Eindhoven, Netherlands


Patients with non-labelled implants are often ineligible for MRI. Sometimes non-labelled implants are scanned by some hospitals based on literature and empirical insights, power constraints are abided to avoid tissue heating. Using an accelerated simulation method we demonstrate a proof of concept workflow to obtain the patient-specific SAR increase for multiple patient and implant positions within 2-3 hours. This workflow uses two orthogonal X-ray images to construct a 3D model of the implant which is inserted in a human model. The method enables more accurate scanning constraints and, a more informed risk vs benefit analysis for each patient.

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