Abstract #2689

Large-scale Modelling of Patient Motion for Head Coils at 7T

Amer Ajanovic^1,2, Raphael Tomi-Tricot^1,2,3, Joseph V Hajnal^1,2, and Shaihan Malik^1,2

¹Biomedical Engineering Department, School of Biomedical Engineering and Imaging Sciences, King's College London, LONDON, United Kingdom, ²London Collaborative Ultra high field System (LoCUS), London, United Kingdom, ³MR Research Collaborations, SIEMENS Healthcare Limited, Frimley, United Kingdom

Synopsis

Keywords: Safety, Simulations, ultra-high field, RF arrays and systems, parallel transmit coilsThe aim of this study is 2-fold. First, it is to demonstrate the practicality of using MARIE workflow to generate models with variation due to patient pose/motion. The second aim is to explore use of a simple 1st order linear model to visualise and predict the variation in B1+ and SAR with pose. Consequently, 4 different coils are simulated in more than 2200 positions with respect to body. Low variability in key metrics is observed. 1st order linear model relating position with these metrics is found to further reduce variability.

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