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Abstract #0179

SAR optimised local B 1 + shimming for cardiac imaging at 3T a multi-model study

Arian Beqiri 1 , Francesco Padormo 1,2 , Jeff W. Hand 1 , Joseph V. Hajnal 1,2 , and Shaihan J. Malik 1

1 Division of Imaging Sciences and Biomedical Engineering, King's College London, London, United Kingdom, 2 Centre for the Developing Brain, King's College London, London, United Kingdom

Cardiac imaging at high field suffers from image quality issues due to greater B 1 + inhomogeneities and is frequently limited by SAR, which constrains the speed at which scans can be run without exceeding regulatory limits. By using parallel transmission MRI, we demonstrate the ability to significantly reduce SAR whilst simultaneously improving B 1 + homogeneity in order to optimise imaging over the cardiac region for two differently sized subjects. We also show the effects of selecting the wrong SAR model for each subject.

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