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Abstract #2487

Motion and Pose Variability of SAR Estimation with Parallel Transmission at 7T

Amer Ajanovic1, Joseph V Hajnal1,2, Raphael Tomi-Tricot1,3, and Shaihan Malik1
1Biomedical Engineering Department, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 2Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 3MR Research Collaborations, Siemens Healthcare Limited, Frimley, United Kingdom

Contemporary safety assessment for parallel transmit (pTx) MRI relies on computationally expensive electromagnetic (EM) simulations; hence, safety evaluations rely on the use of small numbers of models. The effect of patient movement inside the coil on patient safety is, therefore, difficult to capture. In this work we compare 'within-scan' variability with the alternative scenario in which a subject’s head is positioned arbitrarily within the coil, but that this position is different to the one used for the SAR estimation model; we refer to this as ‘pose’ variability.

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